Freeze requirements

This found a small number of real bugs too, for example,
this one that looked weird because of a 2to3 conversion,
but was wrong both before and after:
-        except IndexError as TypeError:
+        except (IndexError, TypeError):

.coveragerc

@@ -0,0 +1,12 @@
+# -*- conf -*-
+
+[run]
+branch = True
+
+[report]
+exclude_lines =
+	pragma: no cover
+	if 0:
+        if __name__ == "__main__":
+omit = nilmtools/_version.py
+show_missing = True

.gitignore

@@ -1,3 +1,4 @@
+.coverage
 oldprep
 newprep
 *.dat
@@ -5,5 +6,6 @@ build/
 *.pyc
 dist/
 *.egg-info/
-MANIFEST.in
+.eggs/
+tests/testdb*
 MANIFEST

MANIFEST.in

@@ -0,0 +1,8 @@
+# Root
+include README.md
+include setup.py
+include versioneer.py
+include Makefile
+
+# Version
+include nilmtools/_version.py

Makefile

@@ -1,97 +1,45 @@
-#URL="http://bucket.mit.edu:8080/nilmdb"
+# By default, run the tests.
-URL="http://localhost/nilmdb"
-
 all: test
 
-test:
-ifeq ($(INSIDE_EMACS), t)
-	@make test_sinefit
-else
-	@echo 'No test suite for nilmtools.  Try "make install"'
-endif
-
-test_pipewatch:
-	nilmtools/pipewatch.py -t 3 "seq 10 20" "seq 20 30"
-
-test_trainola:
-	-nilmtool -u http://bucket/nilmdb remove -s min -e max \
-		/sharon/prep-a-matches
-	nilmtools/trainola.py "$$(cat extras/trainola-test-param.js)"
-
-test_trainola2:
-	-nilmtool -u http://bucket/nilmdb remove -s min -e max \
-		/sharon/prep-a-matches
-	nilmtools/trainola.py "$$(cat extras/trainola-test-param-2.js)"
-
-test_trainola3:
-	-nilmtool -u "http://bucket/nilmdb" destroy -R /test/jim
-	nilmtool -u "http://bucket/nilmdb" create /test/jim uint8_3
-	nilmtools/trainola.py "$$(cat extras/trainola-test-param-3.js)"
-	nilmtool -u "http://bucket/nilmdb" extract /test/jim -s min -e max
-
-test_cleanup:
-	nilmtools/cleanup.py -e extras/cleanup.cfg
-	nilmtools/cleanup.py extras/cleanup.cfg
-
-test_insert:
-	nilmtools/insert.py --skip --file --dry-run /foo/bar ~/data/20130311T2100.prep1.gz ~/data/20130311T2100.prep1.gz ~/data/20130311T2200.prep1.gz
-
-test_copy:
-	nilmtools/copy_wildcard.py -U "http://nilmdb.com/bucket/" -D /lees*
-
-/tmp/raw.dat:
-	octave --eval 'fs = 8000;' \
-	--eval 't = (0:fs*10)*2*pi*60/fs;' \
-	--eval 'raw = transpose([sin(t); 0.3*sin(3*t)+sin(t)]);' \
-	--eval 'save("-ascii","/tmp/raw.dat","raw");'
-
-test_prep: /tmp/raw.dat
-	-nilmtool destroy -R /test/raw
-	-nilmtool destroy -R /test/sinefit
-	-nilmtool destroy -R /test/prep
-	nilmtool create /test/raw float32_2
-	nilmtool create /test/sinefit float32_3
-	nilmtool create /test/prep float32_8
-	nilmtool insert -s '@0' -t -r 8000 /test/raw /tmp/raw.dat
-	nilmtools/sinefit.py -a 0.5 -c 1 -s '@0' -e '@5000000' /test/raw /test/sinefit
-	nilmtools/prep.py -c 2 /test/raw /test/sinefit /test/prep
-	nilmtools/prep.py -c 2 /test/raw /test/sinefit /test/prep
-	nilmtool extract -s min -e max /test/prep | head -20
-
-test_sinefit:
-	make install >/dev/null 2>&1
-	-nilmtool destroy -R /test/sinefit
-	nilmtool create /test/sinefit float32_3
-	nilmtools/sinefit.py -c 5 -s '2013/03/25 09:11:00' \
-	-e '2013/03/25 10:11:00' /sharon/raw /test/sinefit
-	nilmtool extract -s min -e max /test/sinefit | head -20
-
-test_decimate:
-	-@nilmtool destroy /lees-compressor/no-leak/raw/4 || true
-	-@nilmtool destroy /lees-compressor/no-leak/raw/16 || true
-	-@nilmtool create /lees-compressor/no-leak/raw/4 float32_18 || true
-	-@nilmtool create /lees-compressor/no-leak/raw/16 float32_18 || true
-	time python nilmtools/decimate.py -s '2013-02-04 18:10:00' -e '2013-02-04 18:11:00' /lees-compressor/no-leak/raw/1 /lees-compressor/no-leak/raw/4
-	python nilmtools/decimate.py -s '2013-02-04 18:10:00' -e '2013-02-04 18:11:00' /lees-compressor/no-leak/raw/4 /lees-compressor/no-leak/raw/16
-
 version:
-	python setup.py version
+	python3 setup.py version
+
+build:
+	python3 setup.py build_ext --inplace
 
 dist: sdist
 sdist:
-	python setup.py sdist
+	python3 setup.py sdist
 
 install:
-	python setup.py install
+	python3 setup.py install
 
 develop:
-	python setup.py develop
+	python3 setup.py develop
+
+ctrl: flake
+flake:
+	flake8 nilmtools
+lint:
+	pylint3 --rcfile=setup.cfg nilmtools
+
+test:
+ifneq ($(INSIDE_EMACS),)
+# Use the slightly more flexible script
+	python3 setup.py build_ext --inplace
+	python3 tests/runtests.py
+else
+# Let setup.py check dependencies, build stuff, and run the test
+	python3 setup.py nosetests
+endif
 
 clean::
-	find . -name '*pyc' | xargs rm -f
+	find . -name '*.pyc' -o -name '__pycache__' -print0 | xargs -0 rm -rf
-	rm -rf nilmtools.egg-info/ build/ MANIFEST.in
+	rm -f .coverage
+	rm -rf nilmtools.egg-info/ build/ .eggs
 
 gitclean::
 	git clean -dXf
 
-.PHONY: all version dist sdist install clean gitclean test
+.PHONY: all version dist sdist install test
+.PHONY: ctrl lint flake clean gitclean

README.md

@@ -0,0 +1,42 @@
+# nilmtools: Tools and utilities for NilmDB
+
+Tools and utilities for interacting with the NILM Database, or writing
+programs that interact with the NILM database.
+
+by Jim Paris <jim@jtan.com>
+
+## Prerequisites:
+
+    # Runtime and build environments
+    sudo apt-get install python3
+
+    # Create a new Python virtual environment to isolate deps.
+    python3 -m venv ../venv
+    source ../venv/bin/activate   # run "deactivate" to leave
+
+    # Install all Python dependencies
+    pip3 install -r requirements.txt
+
+## Install:
+
+Install it into the virtual environment
+
+    python3 setup.py install
+
+If you want to instead install it system-wide, you will also need to
+install the requirements system-wide:
+
+    sudo pip3 install -r requirements.txt
+    sudo python3 setup.py install
+
+## Building new tools:
+
+The tools in this package are meant to be installed with `python3
+setup.py install`.  If you want to make a new one, an easier way to
+develop would be to first install this package, and then copy a
+specific script like `src/sinefit.py` to a new location, and modify it
+as desired.
+
+To add a tool to the package, place it in `src/` and add the
+appropriate configuration to `setup.py`.
+

README.txt

@@ -1,27 +0,0 @@
-nilmtools: Tools and utilities for interacting with the NILM Database,
-or writing programs that interact with the NILM database.
-by Jim Paris <jim@jtan.com>
-
-Prerequisites:
-
-  # Runtime and build environments
-  sudo apt-get install python2.7 python2.7-dev python-setuptools
-  sudo apt-get install python-numpy python-scipy python-daemon
-
-  nilmdb (1.8.5+)
-
-Install:
-
-  python setup.py install
-
-Building new tools:
-
-  The tools in this package are meant to be installed with
-  "python setup.py install".  If you want to make a new one,
-  an easier way to develop would be to first install this package,
-  and then copy a specific script like "src/sinefit.py" to a new
-  location, and modify it as desired.
-
-  To add a tool to the package, place it in "src/" and add the
-  appropriate configuration to "setup.py".
-

extras/trainola-test-param-3.js

@@ -1,5 +1,5 @@
 {
-    "url": "http://bucket/nilmdb",
+    "url": "http://bucket.mit.edu/nilmdb",
     "stream": "/sharon/prep-a",
     "dest_stream": "/test/jim",
     "start": 1364184839901599,
@@ -11,7 +11,7 @@
         {
             "name": "A - True DBL Freezer ON",
             "dest_column": 0,
-            "url": "http://bucket/nilmdb",
+            "url": "http://bucket.mit.edu/nilmdb",
             "stream": "/sharon/prep-a",
             "columns": [ { "index": 0, "name": "P1" } ],
             "start": 1365277707649000,
@@ -20,7 +20,7 @@
         {
             "name": "A - Boiler 1 Fan OFF",
             "dest_column": 1,
-            "url": "http://bucket/nilmdb",
+            "url": "http://bucket.mit.edu/nilmdb",
             "stream": "/sharon/prep-a",
             "columns": [ { "index": 0, "name": "P1" } ],
             "start": 1364188370735000,
@@ -29,7 +29,7 @@
         {
             "name": "A - True DBL Freezer OFF",
             "dest_column": 2,
-            "url": "http://bucket/nilmdb",
+            "url": "http://bucket.mit.edu/nilmdb",
             "stream": "/sharon/prep-a",
             "columns": [ { "index": 0, "name": "P1" } ],
             "start": 1365278087982000,

nilmtools/_version.py

@@ -1,197 +1,520 @@
 
-IN_LONG_VERSION_PY = True
 # This file helps to compute a version number in source trees obtained from
 # git-archive tarball (such as those provided by githubs download-from-tag
-# feature). Distribution tarballs (build by setup.py sdist) and build
+# feature). Distribution tarballs (built by setup.py sdist) and build
 # directories (produced by setup.py build) will contain a much shorter file
 # that just contains the computed version number.
 
 # This file is released into the public domain. Generated by
-# versioneer-0.7+ (https://github.com/warner/python-versioneer)
+# versioneer-0.18 (https://github.com/warner/python-versioneer)
-
-# these strings will be replaced by git during git-archive
-git_refnames = "$Format:%d$"
-git_full = "$Format:%H$"
 
+"""Git implementation of _version.py."""
 
+import errno
+import os
+import re
 import subprocess
 import sys
 
-def run_command(args, cwd=None, verbose=False):
+
-    try:
+def get_keywords():
-        # remember shell=False, so use git.cmd on windows, not just git
+    """Get the keywords needed to look up the version information."""
-        p = subprocess.Popen(args, stdout=subprocess.PIPE, cwd=cwd)
+    # these strings will be replaced by git during git-archive.
-    except EnvironmentError:
+    # setup.py/versioneer.py will grep for the variable names, so they must
-        e = sys.exc_info()[1]
+    # each be defined on a line of their own. _version.py will just call
+    # get_keywords().
+    git_refnames = "$Format:%d$"
+    git_full = "$Format:%H$"
+    git_date = "$Format:%ci$"
+    keywords = {"refnames": git_refnames, "full": git_full, "date": git_date}
+    return keywords
+
+
+class VersioneerConfig:
+    """Container for Versioneer configuration parameters."""
+
+
+def get_config():
+    """Create, populate and return the VersioneerConfig() object."""
+    # these strings are filled in when 'setup.py versioneer' creates
+    # _version.py
+    cfg = VersioneerConfig()
+    cfg.VCS = "git"
+    cfg.style = "pep440"
+    cfg.tag_prefix = "nilmtools-"
+    cfg.parentdir_prefix = "nilmtools-"
+    cfg.versionfile_source = "nilmtools/_version.py"
+    cfg.verbose = False
+    return cfg
+
+
+class NotThisMethod(Exception):
+    """Exception raised if a method is not valid for the current scenario."""
+
+
+LONG_VERSION_PY = {}
+HANDLERS = {}
+
+
+def register_vcs_handler(vcs, method):  # decorator
+    """Decorator to mark a method as the handler for a particular VCS."""
+    def decorate(f):
+        """Store f in HANDLERS[vcs][method]."""
+        if vcs not in HANDLERS:
+            HANDLERS[vcs] = {}
+        HANDLERS[vcs][method] = f
+        return f
+    return decorate
+
+
+def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False,
+                env=None):
+    """Call the given command(s)."""
+    assert isinstance(commands, list)
+    p = None
+    for c in commands:
+        try:
+            dispcmd = str([c] + args)
+            # remember shell=False, so use git.cmd on windows, not just git
+            p = subprocess.Popen([c] + args, cwd=cwd, env=env,
+                                 stdout=subprocess.PIPE,
+                                 stderr=(subprocess.PIPE if hide_stderr
+                                         else None))
+            break
+        except EnvironmentError:
+            e = sys.exc_info()[1]
+            if e.errno == errno.ENOENT:
+                continue
+            if verbose:
+                print("unable to run %s" % dispcmd)
+                print(e)
+            return None, None
+    else:
         if verbose:
-            print("unable to run %s" % args[0])
+            print("unable to find command, tried %s" % (commands,))
-            print(e)
+        return None, None
-        return None
     stdout = p.communicate()[0].strip()
-    if sys.version >= '3':
+    if sys.version_info[0] >= 3:
         stdout = stdout.decode()
     if p.returncode != 0:
         if verbose:
-            print("unable to run %s (error)" % args[0])
+            print("unable to run %s (error)" % dispcmd)
-        return None
+            print("stdout was %s" % stdout)
-    return stdout
+        return None, p.returncode
+    return stdout, p.returncode
 
 
-import sys
+def versions_from_parentdir(parentdir_prefix, root, verbose):
-import re
+    """Try to determine the version from the parent directory name.
-import os.path
 
-def get_expanded_variables(versionfile_source):
+    Source tarballs conventionally unpack into a directory that includes both
+    the project name and a version string. We will also support searching up
+    two directory levels for an appropriately named parent directory
+    """
+    rootdirs = []
+
+    for i in range(3):
+        dirname = os.path.basename(root)
+        if dirname.startswith(parentdir_prefix):
+            return {"version": dirname[len(parentdir_prefix):],
+                    "full-revisionid": None,
+                    "dirty": False, "error": None, "date": None}
+        else:
+            rootdirs.append(root)
+            root = os.path.dirname(root)  # up a level
+
+    if verbose:
+        print("Tried directories %s but none started with prefix %s" %
+              (str(rootdirs), parentdir_prefix))
+    raise NotThisMethod("rootdir doesn't start with parentdir_prefix")
+
+
+@register_vcs_handler("git", "get_keywords")
+def git_get_keywords(versionfile_abs):
+    """Extract version information from the given file."""
     # the code embedded in _version.py can just fetch the value of these
-    # variables. When used from setup.py, we don't want to import
+    # keywords. When used from setup.py, we don't want to import _version.py,
-    # _version.py, so we do it with a regexp instead. This function is not
+    # so we do it with a regexp instead. This function is not used from
-    # used from _version.py.
+    # _version.py.
-    variables = {}
+    keywords = {}
     try:
-        for line in open(versionfile_source,"r").readlines():
+        f = open(versionfile_abs, "r")
+        for line in f.readlines():
             if line.strip().startswith("git_refnames ="):
                 mo = re.search(r'=\s*"(.*)"', line)
                 if mo:
-                    variables["refnames"] = mo.group(1)
+                    keywords["refnames"] = mo.group(1)
             if line.strip().startswith("git_full ="):
                 mo = re.search(r'=\s*"(.*)"', line)
                 if mo:
-                    variables["full"] = mo.group(1)
+                    keywords["full"] = mo.group(1)
+            if line.strip().startswith("git_date ="):
+                mo = re.search(r'=\s*"(.*)"', line)
+                if mo:
+                    keywords["date"] = mo.group(1)
+        f.close()
     except EnvironmentError:
         pass
-    return variables
+    return keywords
 
-def versions_from_expanded_variables(variables, tag_prefix, verbose=False):
+
-    refnames = variables["refnames"].strip()
+@register_vcs_handler("git", "keywords")
+def git_versions_from_keywords(keywords, tag_prefix, verbose):
+    """Get version information from git keywords."""
+    if not keywords:
+        raise NotThisMethod("no keywords at all, weird")
+    date = keywords.get("date")
+    if date is not None:
+        # git-2.2.0 added "%cI", which expands to an ISO-8601 -compliant
+        # datestamp. However we prefer "%ci" (which expands to an "ISO-8601
+        # -like" string, which we must then edit to make compliant), because
+        # it's been around since git-1.5.3, and it's too difficult to
+        # discover which version we're using, or to work around using an
+        # older one.
+        date = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
+    refnames = keywords["refnames"].strip()
     if refnames.startswith("$Format"):
         if verbose:
-            print("variables are unexpanded, not using")
+            print("keywords are unexpanded, not using")
-        return {} # unexpanded, so not in an unpacked git-archive tarball
+        raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
     refs = set([r.strip() for r in refnames.strip("()").split(",")])
-    for ref in list(refs):
+    # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
-        if not re.search(r'\d', ref):
+    # just "foo-1.0". If we see a "tag: " prefix, prefer those.
-            if verbose:
+    TAG = "tag: "
-                print("discarding '%s', no digits" % ref)
+    tags = set([r[len(TAG):] for r in refs if r.startswith(TAG)])
-            refs.discard(ref)
+    if not tags:
-            # Assume all version tags have a digit. git's %d expansion
+        # Either we're using git < 1.8.3, or there really are no tags. We use
-            # behaves like git log --decorate=short and strips out the
+        # a heuristic: assume all version tags have a digit. The old git %d
-            # refs/heads/ and refs/tags/ prefixes that would let us
+        # expansion behaves like git log --decorate=short and strips out the
-            # distinguish between branches and tags. By ignoring refnames
+        # refs/heads/ and refs/tags/ prefixes that would let us distinguish
-            # without digits, we filter out many common branch names like
+        # between branches and tags. By ignoring refnames without digits, we
-            # "release" and "stabilization", as well as "HEAD" and "master".
+        # filter out many common branch names like "release" and
+        # "stabilization", as well as "HEAD" and "master".
+        tags = set([r for r in refs if re.search(r'\d', r)])
+        if verbose:
+            print("discarding '%s', no digits" % ",".join(refs - tags))
     if verbose:
-        print("remaining refs: %s" % ",".join(sorted(refs)))
+        print("likely tags: %s" % ",".join(sorted(tags)))
-    for ref in sorted(refs):
+    for ref in sorted(tags):
         # sorting will prefer e.g. "2.0" over "2.0rc1"
         if ref.startswith(tag_prefix):
             r = ref[len(tag_prefix):]
             if verbose:
                 print("picking %s" % r)
-            return { "version": r,
+            return {"version": r,
-                     "full": variables["full"].strip() }
+                    "full-revisionid": keywords["full"].strip(),
-    # no suitable tags, so we use the full revision id
+                    "dirty": False, "error": None,
+                    "date": date}
+    # no suitable tags, so version is "0+unknown", but full hex is still there
     if verbose:
-        print("no suitable tags, using full revision id")
+        print("no suitable tags, using unknown + full revision id")
-    return { "version": variables["full"].strip(),
+    return {"version": "0+unknown",
-             "full": variables["full"].strip() }
+            "full-revisionid": keywords["full"].strip(),
+            "dirty": False, "error": "no suitable tags", "date": None}
 
-def versions_from_vcs(tag_prefix, versionfile_source, verbose=False):
+
-    # this runs 'git' from the root of the source tree. That either means
+@register_vcs_handler("git", "pieces_from_vcs")
-    # someone ran a setup.py command (and this code is in versioneer.py, so
+def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command):
-    # IN_LONG_VERSION_PY=False, thus the containing directory is the root of
+    """Get version from 'git describe' in the root of the source tree.
-    # the source tree), or someone ran a project-specific entry point (and
+
-    # this code is in _version.py, so IN_LONG_VERSION_PY=True, thus the
+    This only gets called if the git-archive 'subst' keywords were *not*
-    # containing directory is somewhere deeper in the source tree). This only
+    expanded, and _version.py hasn't already been rewritten with a short
-    # gets called if the git-archive 'subst' variables were *not* expanded,
+    version string, meaning we're inside a checked out source tree.
-    # and _version.py hasn't already been rewritten with a short version
+    """
-    # string, meaning we're inside a checked out source tree.
+    GITS = ["git"]
+    if sys.platform == "win32":
+        GITS = ["git.cmd", "git.exe"]
+
+    out, rc = run_command(GITS, ["rev-parse", "--git-dir"], cwd=root,
+                          hide_stderr=True)
+    if rc != 0:
+        if verbose:
+            print("Directory %s not under git control" % root)
+        raise NotThisMethod("'git rev-parse --git-dir' returned error")
+
+    # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
+    # if there isn't one, this yields HEX[-dirty] (no NUM)
+    describe_out, rc = run_command(GITS, ["describe", "--tags", "--dirty",
+                                          "--always", "--long",
+                                          "--match", "%s*" % tag_prefix],
+                                   cwd=root)
+    # --long was added in git-1.5.5
+    if describe_out is None:
+        raise NotThisMethod("'git describe' failed")
+    describe_out = describe_out.strip()
+    full_out, rc = run_command(GITS, ["rev-parse", "HEAD"], cwd=root)
+    if full_out is None:
+        raise NotThisMethod("'git rev-parse' failed")
+    full_out = full_out.strip()
+
+    pieces = {}
+    pieces["long"] = full_out
+    pieces["short"] = full_out[:7]  # maybe improved later
+    pieces["error"] = None
+
+    # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
+    # TAG might have hyphens.
+    git_describe = describe_out
+
+    # look for -dirty suffix
+    dirty = git_describe.endswith("-dirty")
+    pieces["dirty"] = dirty
+    if dirty:
+        git_describe = git_describe[:git_describe.rindex("-dirty")]
+
+    # now we have TAG-NUM-gHEX or HEX
+
+    if "-" in git_describe:
+        # TAG-NUM-gHEX
+        mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
+        if not mo:
+            # unparseable. Maybe git-describe is misbehaving?
+            pieces["error"] = ("unable to parse git-describe output: '%s'"
+                               % describe_out)
+            return pieces
+
+        # tag
+        full_tag = mo.group(1)
+        if not full_tag.startswith(tag_prefix):
+            if verbose:
+                fmt = "tag '%s' doesn't start with prefix '%s'"
+                print(fmt % (full_tag, tag_prefix))
+            pieces["error"] = ("tag '%s' doesn't start with prefix '%s'"
+                               % (full_tag, tag_prefix))
+            return pieces
+        pieces["closest-tag"] = full_tag[len(tag_prefix):]
+
+        # distance: number of commits since tag
+        pieces["distance"] = int(mo.group(2))
+
+        # commit: short hex revision ID
+        pieces["short"] = mo.group(3)
+
+    else:
+        # HEX: no tags
+        pieces["closest-tag"] = None
+        count_out, rc = run_command(GITS, ["rev-list", "HEAD", "--count"],
+                                    cwd=root)
+        pieces["distance"] = int(count_out)  # total number of commits
+
+    # commit date: see ISO-8601 comment in git_versions_from_keywords()
+    date = run_command(GITS, ["show", "-s", "--format=%ci", "HEAD"],
+                       cwd=root)[0].strip()
+    pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
+
+    return pieces
+
+
+def plus_or_dot(pieces):
+    """Return a + if we don't already have one, else return a ."""
+    if "+" in pieces.get("closest-tag", ""):
+        return "."
+    return "+"
+
+
+def render_pep440(pieces):
+    """Build up version string, with post-release "local version identifier".
+
+    Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
+    get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty
+
+    Exceptions:
+    1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"] or pieces["dirty"]:
+            rendered += plus_or_dot(pieces)
+            rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
+            if pieces["dirty"]:
+                rendered += ".dirty"
+    else:
+        # exception #1
+        rendered = "0+untagged.%d.g%s" % (pieces["distance"],
+                                          pieces["short"])
+        if pieces["dirty"]:
+            rendered += ".dirty"
+    return rendered
+
+
+def render_pep440_pre(pieces):
+    """TAG[.post.devDISTANCE] -- No -dirty.
+
+    Exceptions:
+    1: no tags. 0.post.devDISTANCE
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"]:
+            rendered += ".post.dev%d" % pieces["distance"]
+    else:
+        # exception #1
+        rendered = "0.post.dev%d" % pieces["distance"]
+    return rendered
+
+
+def render_pep440_post(pieces):
+    """TAG[.postDISTANCE[.dev0]+gHEX] .
+
+    The ".dev0" means dirty. Note that .dev0 sorts backwards
+    (a dirty tree will appear "older" than the corresponding clean one),
+    but you shouldn't be releasing software with -dirty anyways.
+
+    Exceptions:
+    1: no tags. 0.postDISTANCE[.dev0]
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"] or pieces["dirty"]:
+            rendered += ".post%d" % pieces["distance"]
+            if pieces["dirty"]:
+                rendered += ".dev0"
+            rendered += plus_or_dot(pieces)
+            rendered += "g%s" % pieces["short"]
+    else:
+        # exception #1
+        rendered = "0.post%d" % pieces["distance"]
+        if pieces["dirty"]:
+            rendered += ".dev0"
+        rendered += "+g%s" % pieces["short"]
+    return rendered
+
+
+def render_pep440_old(pieces):
+    """TAG[.postDISTANCE[.dev0]] .
+
+    The ".dev0" means dirty.
+
+    Eexceptions:
+    1: no tags. 0.postDISTANCE[.dev0]
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"] or pieces["dirty"]:
+            rendered += ".post%d" % pieces["distance"]
+            if pieces["dirty"]:
+                rendered += ".dev0"
+    else:
+        # exception #1
+        rendered = "0.post%d" % pieces["distance"]
+        if pieces["dirty"]:
+            rendered += ".dev0"
+    return rendered
+
+
+def render_git_describe(pieces):
+    """TAG[-DISTANCE-gHEX][-dirty].
+
+    Like 'git describe --tags --dirty --always'.
+
+    Exceptions:
+    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"]:
+            rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
+    else:
+        # exception #1
+        rendered = pieces["short"]
+    if pieces["dirty"]:
+        rendered += "-dirty"
+    return rendered
+
+
+def render_git_describe_long(pieces):
+    """TAG-DISTANCE-gHEX[-dirty].
+
+    Like 'git describe --tags --dirty --always -long'.
+    The distance/hash is unconditional.
+
+    Exceptions:
+    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
+    else:
+        # exception #1
+        rendered = pieces["short"]
+    if pieces["dirty"]:
+        rendered += "-dirty"
+    return rendered
+
+
+def render(pieces, style):
+    """Render the given version pieces into the requested style."""
+    if pieces["error"]:
+        return {"version": "unknown",
+                "full-revisionid": pieces.get("long"),
+                "dirty": None,
+                "error": pieces["error"],
+                "date": None}
+
+    if not style or style == "default":
+        style = "pep440"  # the default
+
+    if style == "pep440":
+        rendered = render_pep440(pieces)
+    elif style == "pep440-pre":
+        rendered = render_pep440_pre(pieces)
+    elif style == "pep440-post":
+        rendered = render_pep440_post(pieces)
+    elif style == "pep440-old":
+        rendered = render_pep440_old(pieces)
+    elif style == "git-describe":
+        rendered = render_git_describe(pieces)
+    elif style == "git-describe-long":
+        rendered = render_git_describe_long(pieces)
+    else:
+        raise ValueError("unknown style '%s'" % style)
+
+    return {"version": rendered, "full-revisionid": pieces["long"],
+            "dirty": pieces["dirty"], "error": None,
+            "date": pieces.get("date")}
+
+
+def get_versions():
+    """Get version information or return default if unable to do so."""
+    # I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have
+    # __file__, we can work backwards from there to the root. Some
+    # py2exe/bbfreeze/non-CPython implementations don't do __file__, in which
+    # case we can only use expanded keywords.
+
+    cfg = get_config()
+    verbose = cfg.verbose
 
     try:
-        here = os.path.abspath(__file__)
+        return git_versions_from_keywords(get_keywords(), cfg.tag_prefix,
-    except NameError:
+                                          verbose)
-        # some py2exe/bbfreeze/non-CPython implementations don't do __file__
+    except NotThisMethod:
-        return {} # not always correct
+        pass
 
-    # versionfile_source is the relative path from the top of the source tree
+    try:
-    # (where the .git directory might live) to this file. Invert this to find
+        root = os.path.realpath(__file__)
-    # the root from __file__.
-    root = here
-    if IN_LONG_VERSION_PY:
-        for i in range(len(versionfile_source.split("/"))):
-            root = os.path.dirname(root)
-    else:
-        root = os.path.dirname(here)
-    if not os.path.exists(os.path.join(root, ".git")):
-        if verbose:
-            print("no .git in %s" % root)
-        return {}
-
-    GIT = "git"
-    if sys.platform == "win32":
-        GIT = "git.cmd"
-    stdout = run_command([GIT, "describe", "--tags", "--dirty", "--always"],
-                         cwd=root)
-    if stdout is None:
-        return {}
-    if not stdout.startswith(tag_prefix):
-        if verbose:
-            print("tag '%s' doesn't start with prefix '%s'" % (stdout, tag_prefix))
-        return {}
-    tag = stdout[len(tag_prefix):]
-    stdout = run_command([GIT, "rev-parse", "HEAD"], cwd=root)
-    if stdout is None:
-        return {}
-    full = stdout.strip()
-    if tag.endswith("-dirty"):
-        full += "-dirty"
-    return {"version": tag, "full": full}
-
-
-def versions_from_parentdir(parentdir_prefix, versionfile_source, verbose=False):
-    if IN_LONG_VERSION_PY:
-        # We're running from _version.py. If it's from a source tree
-        # (execute-in-place), we can work upwards to find the root of the
-        # tree, and then check the parent directory for a version string. If
-        # it's in an installed application, there's no hope.
-        try:
-            here = os.path.abspath(__file__)
-        except NameError:
-            # py2exe/bbfreeze/non-CPython don't have __file__
-            return {} # without __file__, we have no hope
         # versionfile_source is the relative path from the top of the source
-        # tree to _version.py. Invert this to find the root from __file__.
+        # tree (where the .git directory might live) to this file. Invert
-        root = here
+        # this to find the root from __file__.
-        for i in range(len(versionfile_source.split("/"))):
+        for i in cfg.versionfile_source.split('/'):
             root = os.path.dirname(root)
-    else:
+    except NameError:
-        # we're running from versioneer.py, which means we're running from
+        return {"version": "0+unknown", "full-revisionid": None,
-        # the setup.py in a source tree. sys.argv[0] is setup.py in the root.
+                "dirty": None,
-        here = os.path.abspath(sys.argv[0])
+                "error": "unable to find root of source tree",
-        root = os.path.dirname(here)
+                "date": None}
 
-    # Source tarballs conventionally unpack into a directory that includes
+    try:
-    # both the project name and a version string.
+        pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose)
-    dirname = os.path.basename(root)
+        return render(pieces, cfg.style)
-    if not dirname.startswith(parentdir_prefix):
+    except NotThisMethod:
-        if verbose:
+        pass
-            print("guessing rootdir is '%s', but '%s' doesn't start with prefix '%s'" %
-                  (root, dirname, parentdir_prefix))
-        return None
-    return {"version": dirname[len(parentdir_prefix):], "full": ""}
 
-tag_prefix = "nilmtools-"
+    try:
-parentdir_prefix = "nilmtools-"
+        if cfg.parentdir_prefix:
-versionfile_source = "nilmtools/_version.py"
+            return versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
-
+    except NotThisMethod:
-def get_versions(default={"version": "unknown", "full": ""}, verbose=False):
+        pass
-    variables = { "refnames": git_refnames, "full": git_full }
-    ver = versions_from_expanded_variables(variables, tag_prefix, verbose)
-    if not ver:
-        ver = versions_from_vcs(tag_prefix, versionfile_source, verbose)
-    if not ver:
-        ver = versions_from_parentdir(parentdir_prefix, versionfile_source,
-                                      verbose)
-    if not ver:
-        ver = default
-    return ver
 
+    return {"version": "0+unknown", "full-revisionid": None,
+            "dirty": None,
+            "error": "unable to compute version", "date": None}

nilmtools/cleanup.py

@@ -1,7 +1,7 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
-from nilmdb.utils.printf import *
+from nilmdb.utils.printf import printf, fprintf, sprintf
-from nilmdb.utils.time import (parse_time, timestamp_to_human,
+from nilmdb.utils.time import (timestamp_to_human,
                                timestamp_to_seconds, seconds_to_timestamp)
 from nilmdb.utils.diskusage import human_size
 from nilmdb.utils.interval import Interval
@@ -9,21 +9,24 @@ import nilmdb.client
 import nilmdb.client.numpyclient
 import nilmtools
 import argparse
-import ConfigParser
+import configparser
 import sys
 import collections
 import fnmatch
 import re
+import os
+
 
 def warn(msg, *args):
     fprintf(sys.stderr, "warning: " + msg + "\n", *args)
 
+
 class TimePeriod(object):
-    _units = { 'h': ('hour',  60*60),
+    _units = {'h': ('hour',  60*60),
-               'd': ('day',   60*60*24),
+              'd': ('day',   60*60*24),
-               'w': ('week',  60*60*24*7),
+              'w': ('week',  60*60*24*7),
-               'm': ('month', 60*60*24*30),
+              'm': ('month', 60*60*24*30),
-               'y': ('year',  60*60*24*365) }
+              'y': ('year',  60*60*24*365)}
 
     def __init__(self, val):
         for u in self._units:
@@ -33,7 +36,7 @@ class TimePeriod(object):
                 self.count = float(val[:-len(u)])
                 break
         else:
-            raise ValueError("unknown units: " + units)
+            raise ValueError("unknown units: " + val)
 
     def seconds(self):
         return self.count * self.scale
@@ -49,6 +52,7 @@ class TimePeriod(object):
     def __str__(self):
         return self.describe_seconds(self.seconds())
 
+
 class StreamCleanupConfig(object):
     def __init__(self, info):
         self.path = info[0]
@@ -62,11 +66,11 @@ class StreamCleanupConfig(object):
         self.decimated_from = None
         self.also_clean_paths = []
 
-def main(argv = None):
+
+def main(argv=None):
     parser = argparse.ArgumentParser(
-        formatter_class = argparse.RawDescriptionHelpFormatter,
+        formatter_class=argparse.RawDescriptionHelpFormatter,
-        version = nilmtools.__version__,
+        description="""\
-        description = """\
     Clean up old data from streams using a configuration file to specify
     which data to remove.
 
@@ -93,26 +97,28 @@ def main(argv = None):
 
     Rate is optional and is only used for the --estimate option.
     """)
-    parser.add_argument("-u", "--url", action="store",
+    parser.add_argument("-v", "--version", action="version",
-                        default="http://localhost/nilmdb/",
+                        version=nilmtools.__version__)
+    def_url = os.environ.get("NILMDB_URL", "http://localhost/nilmdb/")
+    parser.add_argument("-u", "--url", action="store", default=def_url,
                         help="NilmDB server URL (default: %(default)s)")
     parser.add_argument("-y", "--yes", action="store_true",
-                        default = False,
+                        default=False,
                         help="Actually remove the data (default: no)")
     parser.add_argument("-e", "--estimate", action="store_true",
-                        default = False,
+                        default=False,
                         help="Estimate how much disk space will be used")
     parser.add_argument("configfile", type=argparse.FileType('r'),
                         help="Configuration file")
     args = parser.parse_args(argv)
 
     # Parse config file
-    config = ConfigParser.RawConfigParser()
+    config = configparser.RawConfigParser()
     config.readfp(args.configfile)
 
     # List all streams
     client = nilmdb.client.Client(args.url)
-    streamlist = client.stream_list(extended = True)
+    streamlist = client.stream_list(extended=True)
 
     # Create config objects
     streams = collections.OrderedDict()
@@ -125,7 +131,7 @@ def main(argv = None):
     # Build up configuration
     for section in config.sections():
         matched = False
-        for path in streams.iterkeys():
+        for path in streams.keys():
             # Decimated streams only allow exact matches
             if streams[path].decimated_from and path != section:
                 continue
@@ -157,7 +163,7 @@ def main(argv = None):
             warn("config for '%s' did not match any existing streams", section)
 
     # List all decimated streams in the parent stream's info
-    for path in streams.keys():
+    for path in list(streams.keys()):
         src = streams[path].decimated_from
         if src and src in streams:
             if streams[src].clean_decimated:
@@ -165,7 +171,7 @@ def main(argv = None):
                 del streams[path]
 
     # Warn about streams that aren't getting cleaned up
-    for path in streams.keys():
+    for path in list(streams.keys()):
         if streams[path].keep is None or streams[path].keep.seconds() < 0:
             warn("no config for existing stream '%s'", path)
             del streams[path]
@@ -173,7 +179,7 @@ def main(argv = None):
     if args.estimate:
         # Estimate disk usage
         total = 0
-        for path in streams.keys():
+        for path in list(streams.keys()):
             rate = streams[path].rate
             if not rate or rate < 0:
                 warn("unable to estimate disk usage for stream '%s' because "
@@ -187,7 +193,7 @@ def main(argv = None):
             printf("%17s: %s per row, %s rows per second\n",
                    "base rate",
                    human_size(per_row),
-                   round(rate,1))
+                   round(rate, 1))
             printf("%17s: %s per hour, %s per day\n",
                    "base size",
                    human_size(per_sec * 3600),
@@ -202,7 +208,9 @@ def main(argv = None):
                 # sum_{k=0..inf} (rate / (n^k)) * d_dtype.itemsize
                 d_per_row = d_dtype.itemsize
                 factor = 4.0
-                d_per_sec = d_per_row * (rate / factor) * (1 / (1 - (1/factor)))
+                d_per_sec = (d_per_row *
+                             (rate / factor) *
+                             (1 / (1 - (1/factor))))
                 per_sec += d_per_sec
                 printf("%17s: %s per hour, %s per day\n",
                        "with decimation",
@@ -222,8 +230,8 @@ def main(argv = None):
         printf("%s: keep %s\n", path, streams[path].keep)
 
         # Figure out the earliest timestamp we should keep.
-        intervals = [ Interval(start, end) for (start, end) in
+        intervals = [Interval(start, end) for (start, end) in
-                      reversed(list(client.stream_intervals(path))) ]
+                     reversed(list(client.stream_intervals(path)))]
         total = 0
         keep = seconds_to_timestamp(streams[path].keep.seconds())
         for i in intervals:
@@ -237,12 +245,13 @@ def main(argv = None):
                    streams[path].keep.describe_seconds(
                        timestamp_to_seconds(total)))
             continue
-        printf("  removing data before %s\n", timestamp_to_human(remove_before))
+        printf("  removing data before %s\n",
+               timestamp_to_human(remove_before))
         # Clean in reverse order.  Since we only use the primary stream and not
         # the decimated streams to figure out which data to remove, removing
         # the primary stream last means that we might recover more nicely if
         # we are interrupted and restarted.
-        clean_paths = list(reversed(streams[path].also_clean_paths)) + [ path ]
+        clean_paths = list(reversed(streams[path].also_clean_paths)) + [path]
         for p in clean_paths:
             printf("  removing from %s\n", p)
             if args.yes:
@@ -253,5 +262,6 @@ def main(argv = None):
         printf("Note: specify --yes to actually perform removals\n")
     return
 
+
 if __name__ == "__main__":
     main()

nilmtools/copy_one.py

@@ -1,15 +1,13 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 # This is called copy_one instead of copy to avoid name conflicts with
 # the Python standard library.
 
 import nilmtools.filter
-import nilmdb.client
 from nilmdb.client.numpyclient import NumpyClient
-import numpy as np
-import sys
 
-def main(argv = None):
+
+def main(argv=None):
     f = nilmtools.filter.Filter()
     parser = f.setup_parser("Copy a stream")
     parser.add_argument('-n', '--nometa', action='store_true',
@@ -19,11 +17,11 @@ def main(argv = None):
     try:
         args = f.parse_args(argv)
     except nilmtools.filter.MissingDestination as e:
-        print "Source is %s (%s)" % (e.src.path, e.src.layout)
+        print("Source is %s (%s)" % (e.src.path, e.src.layout))
-        print "Destination %s doesn't exist" % (e.dest.path)
+        print("Destination %s doesn't exist" % (e.dest.path))
-        print "You could make it with a command like:"
+        print("You could make it with a command like:")
-        print "  nilmtool -u %s create %s %s" % (e.dest.url,
+        print("  nilmtool -u %s create %s %s" % (e.dest.url,
-                                                 e.dest.path, e.src.layout)
+                                                 e.dest.path, e.src.layout))
         raise SystemExit(1)
 
     # Copy metadata
@@ -35,10 +33,11 @@ def main(argv = None):
     extractor = NumpyClient(f.src.url).stream_extract_numpy
     inserter = NumpyClient(f.dest.url).stream_insert_numpy_context
     for i in f.intervals():
-        print "Processing", i.human_string()
+        print("Processing", i.human_string())
         with inserter(f.dest.path, i.start, i.end) as insert_ctx:
             for data in extractor(f.src.path, i.start, i.end):
                 insert_ctx.insert(data)
 
+
 if __name__ == "__main__":
     main()

nilmtools/copy_wildcard.py

@@ -1,21 +1,21 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 # Copy streams between NilmDB servers with wildcards
 
 import nilmtools.filter
 import nilmtools.copy_one
 import nilmdb.client
-import argparse
 import fnmatch
 
-def main(argv = None):
+
+def main(argv=None):
     f = nilmtools.filter.Filter()
     # Reuse filter's parser, since it handles most options we need.
-    parser = f.setup_parser(description = """\
+    parser = f.setup_parser(description="""\
     Copy all streams matching the given wildcard from one host to another.
 
     Example: %(prog)s -u http://host1/nilmdb -U http://host2/nilmdb /sharon/*
-    """, skip_paths = True)
+    """, skip_paths=True)
     parser.add_argument('-n', '--nometa', action='store_true',
                         help="Don't copy or check metadata")
     parser.add_argument("path", action="store", nargs="+",
@@ -29,13 +29,13 @@ def main(argv = None):
     client_dest = nilmdb.client.Client(args.dest_url)
     if client_src.geturl() == client_dest.geturl():
         parser.error("source and destination URL must be different")
-    print "Source URL:", client_src.geturl()
+    print("Source URL:", client_src.geturl())
-    print "  Dest URL:", client_dest.geturl()
+    print("  Dest URL:", client_dest.geturl())
 
     # Find matching streams
     matched = []
     for path in args.path:
-        matched.extend([s for s in client_src.stream_list(extended = True)
+        matched.extend([s for s in client_src.stream_list(extended=True)
                         if fnmatch.fnmatch(s[0], path)
                         and s not in matched])
 
@@ -44,14 +44,14 @@ def main(argv = None):
         src = nilmtools.filter.StreamInfo(client_src.geturl(), stream)
         dest = nilmtools.filter.get_stream_info(client_dest, src.path)
         if not dest:
-            print "Creating destination stream", src.path
+            print("Creating destination stream", src.path)
             client_dest.stream_create(src.path, src.layout)
 
     # Copy them all by running the "copy" tool as if it were
     # invoked from the command line.
     for stream in matched:
         new_argv = ["--url", client_src.geturl(),
-                     "--dest-url", client_dest.geturl() ]
+                    "--dest-url", client_dest.geturl()]
         if args.start:
             new_argv.extend(["--start", "@" + repr(args.start)])
         if args.end:
@@ -67,8 +67,9 @@ def main(argv = None):
             nilmtools.copy_one.main(new_argv)
         except SystemExit as e:
             # Ignore SystemExit which could be raised on --dry-run
-            if e.code != 0:
+            if e.code != 0:  # pragma: no cover (shouldn't happen)
                 raise
 
+
 if __name__ == "__main__":
     main()

nilmtools/decimate.py

@@ -1,11 +1,10 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 import nilmtools.filter
-import nilmdb.client
 import numpy as np
-import operator
 
-def main(argv = None):
+
+def main(argv=None):
     f = nilmtools.filter.Filter()
     parser = f.setup_parser("Decimate a stream")
     group = parser.add_argument_group("Decimate options")
@@ -20,31 +19,34 @@ def main(argv = None):
         # a recommended layout.
         src = e.src
         dest = e.dest
-        print "Source is %s (%s)" % (src.path, src.layout)
+        print("Source is %s (%s)" % (src.path, src.layout))
-        print "Destination %s doesn't exist" % (dest.path)
+        print("Destination %s doesn't exist" % (dest.path))
         if "decimate_source" in f.client_src.stream_get_metadata(src.path):
             rec = src.layout
-        elif 'int32' in src.layout_type or 'float64' in src.layout_type:
+        elif ('int32' in src.layout_type or
+              'int64' in src.layout_type or
+              'float64' in src.layout_type):
             rec = 'float64_' + str(src.layout_count * 3)
         else:
             rec = 'float32_' + str(src.layout_count * 3)
-        print "You could make it with a command like:"
+        print("You could make it with a command like:")
-        print "  nilmtool -u %s create %s %s" % (e.dest.url,
+        print("  nilmtool -u %s create %s %s" % (e.dest.url,
-                                                 e.dest.path, rec)
+                                                 e.dest.path, rec))
         raise SystemExit(1)
 
     if not (args.factor >= 2):
         raise Exception("factor needs to be 2 or more")
 
-    f.check_dest_metadata({ "decimate_source": f.src.path,
+    f.check_dest_metadata({"decimate_source": f.src.path,
-                            "decimate_factor": args.factor })
+                           "decimate_factor": args.factor})
 
     # If source is decimated, we have to decimate a bit differently
     if "decimate_source" in f.client_src.stream_get_metadata(args.srcpath):
         again = True
     else:
         again = False
-    f.process_numpy(decimate, args = (args.factor, again))
+    f.process_numpy(decimate, args=(args.factor, again))
+
 
 def decimate(data, interval, args, insert_function, final):
     """Decimate data"""
@@ -68,18 +70,19 @@ def decimate(data, interval, args, insert_function, final):
 
     # Discard extra rows that aren't a multiple of factor
     n = n // factor * factor
-    data = data[:n,:]
+    data = data[:n, :]
 
     # Reshape it into 3D so we can process 'factor' rows at a time
     data = data.reshape(n // factor, factor, m)
 
     # Fill the result
-    out = np.c_[ np.mean(data[:,:,mean_col], axis=1),
+    out = np.c_[np.mean(data[:, :, mean_col], axis=1),
-                 np.min(data[:,:,min_col], axis=1),
+                np.min(data[:, :, min_col], axis=1),
-                 np.max(data[:,:,max_col], axis=1) ]
+                np.max(data[:, :, max_col], axis=1)]
 
     insert_function(out)
     return n
 
+
 if __name__ == "__main__":
     main()

nilmtools/decimate_auto.py

@@ -1,16 +1,17 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
+import os
 import nilmtools.filter
 import nilmtools.decimate
 import nilmdb.client
 import argparse
 import fnmatch
 
-def main(argv = None):
+
+def main(argv=None):
     parser = argparse.ArgumentParser(
-        formatter_class = argparse.RawDescriptionHelpFormatter,
+        formatter_class=argparse.RawDescriptionHelpFormatter,
-        version = nilmtools.__version__,
+        description="""\
-        description = """\
     Automatically create multiple decimations from a single source
     stream, continuing until the last decimated level contains fewer
     than 500 points total.
@@ -18,50 +19,62 @@ def main(argv = None):
     Wildcards and multiple paths are accepted.  Decimated paths are
     ignored when matching wildcards.
     """)
-    parser.add_argument("-u", "--url", action="store",
+    def_url = os.environ.get("NILMDB_URL", "http://localhost/nilmdb/")
-                        default="http://localhost/nilmdb/",
+    parser.add_argument("-u", "--url", action="store", default=def_url,
                         help="NilmDB server URL (default: %(default)s)")
     parser.add_argument("-f", "--factor", action="store", default=4, type=int,
                         help='Decimation factor (default: %(default)s)')
+    parser.add_argument("-m", "--max", action="store", default=500, type=int,
+                        help='Maximum number of points in last level ' +
+                        '(default: %(default)s)')
     parser.add_argument("-F", "--force-metadata", action="store_true",
-                        default = False,
+                        default=False,
                         help="Force metadata changes if the dest "
                         "doesn't match")
+    parser.add_argument("-v", "--version", action="version",
+                        version=nilmtools.__version__)
     parser.add_argument("path", action="store", nargs='+',
                         help='Path of base stream')
     args = parser.parse_args(argv)
 
+    if args.max < 0:
+        print("error: bad max, must be nonnegative")
+        raise SystemExit(1)
+
     # Pull out info about the base stream
     client = nilmdb.client.Client(args.url)
 
     # Find list of paths to process
-    streams = [ unicode(s[0]) for s in client.stream_list() ]
+    streams = [str(s[0]) for s in client.stream_list()]
-    streams = [ s for s in streams if "~decim-" not in s ]
+    streams = [s for s in streams if "~decim-" not in s]
     paths = []
     for path in args.path:
-        new = fnmatch.filter(streams, unicode(path))
+        new = fnmatch.filter(streams, str(path))
         if not new:
-            print "error: no stream matched path:", path
+            print("error: no stream matched path:", path)
             raise SystemExit(1)
         paths.extend(new)
 
     for path in paths:
         do_decimation(client, args, path)
 
+
 def do_decimation(client, args, path):
-    print "Decimating", path
+    print("Decimating", path)
     info = nilmtools.filter.get_stream_info(client, path)
-    if not info:
+    if not info:  # pragma: no cover (only good paths passed above)
         raise Exception("path " + path + " not found")
 
     meta = client.stream_get_metadata(path)
     if "decimate_source" in meta:
-        print "Stream", path, "was decimated from", meta["decimate_source"]
+        print("Stream", path, "was decimated from", meta["decimate_source"])
-        print "You need to pass the base stream instead"
+        print("You need to pass the base stream instead")
         raise SystemExit(1)
 
     # Figure out the type we should use for decimated streams
-    if 'int32' in info.layout_type or 'float64' in info.layout_type:
+    if ('int32' in info.layout_type or
+            'int64' in info.layout_type or
+            'float64' in info.layout_type):
         decimated_type = 'float64_' + str(info.layout_count * 3)
     else:
         decimated_type = 'float32_' + str(info.layout_count * 3)
@@ -69,8 +82,8 @@ def do_decimation(client, args, path):
     # Now do the decimations until we have few enough points
     factor = 1
     while True:
-        print "Level", factor, "decimation has", info.rows, "rows"
+        print("Level", factor, "decimation has", info.rows, "rows")
-        if info.rows <= 500:
+        if info.rows <= args.max:
             break
         factor *= args.factor
         new_path = "%s~decim-%d" % (path, factor)
@@ -78,14 +91,14 @@ def do_decimation(client, args, path):
         # Create the stream if needed
         new_info = nilmtools.filter.get_stream_info(client, new_path)
         if not new_info:
-            print "Creating stream", new_path
+            print("Creating stream", new_path)
             client.stream_create(new_path, decimated_type)
 
         # Run the decimation as if it were run from the commandline
-        new_argv = [ "-u", args.url,
+        new_argv = ["-u", args.url,
-                     "-f", str(args.factor) ]
+                    "-f", str(args.factor)]
         if args.force_metadata:
-            new_argv.extend([ "--force-metadata" ])
+            new_argv.extend(["--force-metadata"])
         new_argv.extend([info.path, new_path])
         nilmtools.decimate.main(new_argv)
 
@@ -94,5 +107,6 @@ def do_decimation(client, args, path):
 
     return
 
+
 if __name__ == "__main__":
     main()

nilmtools/filter.py

@@ -1,35 +1,30 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
-
-from __future__ import absolute_import
 
 import nilmdb.client
 from nilmdb.client import Client
 from nilmdb.client.numpyclient import NumpyClient
-from nilmdb.utils.printf import *
+from nilmdb.utils.printf import printf, sprintf
-from nilmdb.utils.time import (parse_time, timestamp_to_human,
-                               timestamp_to_seconds)
 from nilmdb.utils.interval import Interval
 
 import nilmtools
 
-import itertools
+import os
-import time
-import sys
-import re
 import argparse
 import numpy as np
-import cStringIO
 import functools
 
+
 class ArgumentError(Exception):
     pass
 
+
 class MissingDestination(Exception):
     def __init__(self, args, src, dest):
         self.parsed_args = args
         self.src = src
         self.dest = dest
-        Exception.__init__(self, "destination path " + dest.path + " not found")
+        Exception.__init__(self, f"destination path {dest.path} not found")
+
 
 class StreamInfo(object):
     def __init__(self, url, info):
@@ -45,7 +40,7 @@ class StreamInfo(object):
             self.timestamp_max = info[3]
             self.rows = info[4]
             self.seconds = nilmdb.utils.time.timestamp_to_seconds(info[5])
-        except IndexError, TypeError:
+        except (IndexError, TypeError):
             pass
 
     def string(self, interhost):
@@ -61,17 +56,19 @@ class StreamInfo(object):
                        self.path, self.layout, self.rows / 1e6,
                        self.seconds / 3600.0)
 
+
 def get_stream_info(client, path):
     """Return a StreamInfo object about the given path, or None if it
     doesn't exist"""
-    streams = client.stream_list(path, extended = True)
+    streams = client.stream_list(path, extended=True)
     if len(streams) != 1:
         return None
     return StreamInfo(client.geturl(), streams[0])
 
+
 # Filter processing for a single interval of data.
 def process_numpy_interval(interval, extractor, inserter, warn_rows,
-                           function, args = None):
+                           function, args=None):
     """For the given 'interval' of data, extract data, process it
     through 'function', and insert the result.
 
@@ -133,6 +130,7 @@ def process_numpy_interval(interval, extractor, inserter, warn_rows,
                 # we'll not miss any data when we run again later.
                 insert_ctx.update_end(old_array[processed][0])
 
+
 def example_callback_function(data, interval, args, insert_func, final):
     """Example of the signature for the function that gets passed
     to process_numpy_interval.
@@ -161,9 +159,10 @@ def example_callback_function(data, interval, args, insert_func, final):
     """
     raise NotImplementedError("example_callback_function does nothing")
 
+
 class Filter(object):
 
-    def __init__(self, parser_description = None):
+    def __init__(self, parser_description=None):
         self._parser = None
         self._client_src = None
         self._client_dest = None
@@ -174,6 +173,7 @@ class Filter(object):
         self.end = None
         self._interhost = False
         self._force_metadata = False
+        self.def_url = os.environ.get("NILMDB_URL", "http://localhost/nilmdb/")
         if parser_description is not None:
             self.setup_parser(parser_description)
             self.parse_args()
@@ -181,33 +181,35 @@ class Filter(object):
     @property
     def client_src(self):
         if self._using_client:
-            raise Exception("Filter client is in use; make another")
+            raise Exception("Filter src client is in use; make another")
         return self._client_src
 
     @property
     def client_dest(self):
         if self._using_client:
-            raise Exception("Filter client is in use; make another")
+            raise Exception("Filter dest client is in use; make another")
         return self._client_dest
 
-    def setup_parser(self, description = "Filter data", skip_paths = False):
+    def setup_parser(self, description="Filter data", skip_paths=False):
         parser = argparse.ArgumentParser(
-            formatter_class = argparse.RawDescriptionHelpFormatter,
+            formatter_class=argparse.RawDescriptionHelpFormatter,
-            version = nilmtools.__version__,
+            description=description)
-            description = description)
         group = parser.add_argument_group("General filter arguments")
         group.add_argument("-u", "--url", action="store",
-                           default="http://localhost/nilmdb/",
+                           default=self.def_url,
                            help="Server URL (default: %(default)s)")
         group.add_argument("-U", "--dest-url", action="store",
                            help="Destination server URL "
                            "(default: same as source)")
         group.add_argument("-D", "--dry-run", action="store_true",
-                           default = False,
+                           default=False,
                            help="Just print intervals that would be "
                            "processed")
+        group.add_argument("-q", "--quiet", action="store_true",
+                           default=False,
+                           help="Don't print source and dest stream info")
         group.add_argument("-F", "--force-metadata", action="store_true",
-                           default = False,
+                           default=False,
                            help="Force metadata changes if the dest "
                            "doesn't match")
         group.add_argument("-s", "--start",
@@ -218,20 +220,23 @@ class Filter(object):
                            metavar="TIME", type=self.arg_time,
                            help="Ending timestamp for intervals "
                            "(free-form, noninclusive)")
+        group.add_argument("-v", "--version", action="version",
+                           version=nilmtools.__version__)
+
         if not skip_paths:
             # Individual filter scripts might want to add these arguments
             # themselves, to include multiple sources in a different order
             # (for example).  "srcpath" and "destpath" arguments must exist,
             # though.
             group.add_argument("srcpath", action="store",
-                               help="Path of source stream, e.g. /foo/bar")
+                               help="Path of source stream, eg. /foo/bar")
             group.add_argument("destpath", action="store",
-                               help="Path of destination stream, e.g. /foo/bar")
+                               help="Path of destination stream, eg. /foo/bar")
         self._parser = parser
         return parser
 
     def set_args(self, url, dest_url, srcpath, destpath, start, end,
-                 parsed_args = None, quiet = True):
+                 parsed_args=None, quiet=True):
         """Set arguments directly from parameters"""
         if dest_url is None:
             dest_url = url
@@ -242,7 +247,8 @@ class Filter(object):
         self._client_dest = Client(dest_url)
 
         if (not self._interhost) and (srcpath == destpath):
-            raise ArgumentError("source and destination path must be different")
+            raise ArgumentError(
+                "source and destination path must be different")
 
         # Open the streams
         self.src = get_stream_info(self._client_src, srcpath)
@@ -259,20 +265,20 @@ class Filter(object):
 
         # Print info
         if not quiet:
-            print "Source:", self.src.string(self._interhost)
+            print("Source:", self.src.string(self._interhost))
-            print "  Dest:", self.dest.string(self._interhost)
+            print("  Dest:", self.dest.string(self._interhost))
 
-    def parse_args(self, argv = None):
+    def parse_args(self, argv=None):
         """Parse arguments from a command line"""
         args = self._parser.parse_args(argv)
 
         self.set_args(args.url, args.dest_url, args.srcpath, args.destpath,
-                      args.start, args.end, quiet = False, parsed_args = args)
+                      args.start, args.end, quiet=args.quiet, parsed_args=args)
 
         self._force_metadata = args.force_metadata
         if args.dry_run:
             for interval in self.intervals():
-                print interval.human_string()
+                print(interval.human_string())
             raise SystemExit(0)
         return args
 
@@ -282,25 +288,25 @@ class Filter(object):
 
         if self._interhost:
             # Do the difference ourselves
-            s_intervals = ( Interval(start, end)
+            s_intervals = (Interval(start, end)
-                            for (start, end) in
+                           for (start, end) in
-                            self._client_src.stream_intervals(
+                           self._client_src.stream_intervals(
-                                self.src.path,
+                               self.src.path,
-                                start = self.start, end = self.end) )
+                               start=self.start, end=self.end))
-            d_intervals = ( Interval(start, end)
+            d_intervals = (Interval(start, end)
-                            for (start, end) in
+                           for (start, end) in
-                            self._client_dest.stream_intervals(
+                           self._client_dest.stream_intervals(
-                                self.dest.path,
+                               self.dest.path,
-                                start = self.start, end = self.end) )
+                               start=self.start, end=self.end))
             intervals = nilmdb.utils.interval.set_difference(s_intervals,
                                                              d_intervals)
         else:
             # Let the server do the difference for us
-            intervals = ( Interval(start, end)
+            intervals = (Interval(start, end)
-                          for (start, end) in
+                         for (start, end) in
-                          self._client_src.stream_intervals(
+                         self._client_src.stream_intervals(
-                              self.src.path, diffpath = self.dest.path,
+                             self.src.path, diffpath=self.dest.path,
-                              start = self.start, end = self.end) )
+                             start=self.start, end=self.end))
         # Optimize intervals: join intervals that are adjacent
         for interval in nilmdb.utils.interval.optimize(intervals):
             yield interval
@@ -324,15 +330,11 @@ class Filter(object):
         if not self._force_metadata:
             for key in data:
                 wanted = data[key]
-                if not isinstance(wanted, basestring):
+                if not isinstance(wanted, str):
                     wanted = str(wanted)
                 val = metadata.get(key, wanted)
-                # Force UTF-8 encoding for comparison and display
-                wanted = wanted.encode('utf-8')
-                val = val.encode('utf-8')
-                key = key.encode('utf-8')
                 if val != wanted and self.dest.rows > 0:
-                    m =  "Metadata in destination stream:\n"
+                    m = "Metadata in destination stream:\n"
                     m += "  %s = %s\n" % (key, val)
                     m += "doesn't match desired data:\n"
                     m += "  %s = %s\n" % (key, wanted)
@@ -345,8 +347,8 @@ class Filter(object):
         self._client_dest.stream_update_metadata(self.dest.path, data)
 
     # The main filter processing method.
-    def process_numpy(self, function, args = None, rows = 100000,
+    def process_numpy(self, function, args=None, rows=100000,
-                      intervals = None):
+                      intervals=None):
         """Calls process_numpy_interval for each interval that currently
         exists in self.src, but doesn't exist in self.dest.  It will
         process the data in chunks as follows:
@@ -367,23 +369,25 @@ class Filter(object):
         inserter = NumpyClient(self.dest.url).stream_insert_numpy_context
 
         extractor_func = functools.partial(extractor, self.src.path,
-                                           layout = self.src.layout,
+                                           layout=self.src.layout,
-                                           maxrows = rows)
+                                           maxrows=rows)
         inserter_func = functools.partial(inserter, self.dest.path)
 
         for interval in (intervals or self.intervals()):
-            print "Processing", interval.human_string()
+            print("Processing", interval.human_string())
             process_numpy_interval(interval, extractor_func, inserter_func,
                                    rows * 3, function, args)
 
-def main(argv = None):
+
+def main(argv=None):
     # This is just a dummy function; actual filters can use the other
     # functions to prepare stuff, and then do something with the data.
     f = Filter()
-    parser = f.setup_parser()
+    parser = f.setup_parser()  # noqa: F841
-    args = f.parse_args(argv)
+    args = f.parse_args(argv)  # noqa: F841
     for i in f.intervals():
-        print "Generic filter: need to handle", i.human_string()
+        print("Generic filter: need to handle", i.human_string())
+
 
 if __name__ == "__main__":
     main()

nilmtools/insert.py

@@ -1,29 +1,29 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 import nilmdb.client
-from nilmdb.utils.printf import *
+from nilmdb.utils.printf import printf, sprintf
 from nilmdb.utils.time import (parse_time, timestamp_to_human,
                                timestamp_to_seconds, seconds_to_timestamp,
                                rate_to_period, now as time_now)
 
+import os
 import nilmtools
-import time
 import sys
-import re
 import argparse
 import subprocess
 import textwrap
 
+
 class ParseError(Exception):
     def __init__(self, filename, error):
         msg = filename + ": " + error
         super(ParseError, self).__init__(msg)
 
-def parse_args(argv = None):
+
+def parse_args(argv=None):
     parser = argparse.ArgumentParser(
-        formatter_class = argparse.RawDescriptionHelpFormatter,
+        formatter_class=argparse.RawDescriptionHelpFormatter,
-        version = nilmtools.__version__,
+        description=textwrap.dedent("""\
-        description = textwrap.dedent("""\
     Insert large amount of data from an external source like ethstream.
 
     This code tracks two timestamps:
@@ -56,9 +56,12 @@ def parse_args(argv = None):
       error is raised.  If '--skip' is specified, the current file
       is skipped instead of raising an error.
     """))
-    parser.add_argument("-u", "--url", action="store",
+    def_url = os.environ.get("NILMDB_URL", "http://localhost/nilmdb/")
-                        default="http://localhost/nilmdb/",
+    parser.add_argument("-u", "--url", action="store", default=def_url,
                         help="NilmDB server URL (default: %(default)s)")
+    parser.add_argument("-v", "--version", action="version",
+                        version=nilmtools.__version__)
+
     group = parser.add_argument_group("Misc options")
     group.add_argument("-D", "--dry-run", action="store_true",
                        help="Parse files, but don't insert any data")
@@ -98,7 +101,7 @@ def parse_args(argv = None):
                        help="Path of stream, e.g. /foo/bar")
 
     group = parser.add_argument_group("Input files")
-    group.add_argument("infile", type=argparse.FileType('r'), nargs='*',
+    group.add_argument("infile", type=argparse.FileType('rb'), nargs='*',
                        default=[sys.stdin],
                        help="Input files (default: stdin)")
 
@@ -126,7 +129,8 @@ def parse_args(argv = None):
 
     return args
 
-def main(argv = None):
+
+def main(argv=None):
     args = parse_args(argv)
 
     client = nilmdb.client.Client(args.url)
@@ -136,6 +140,7 @@ def main(argv = None):
     data_ts_inc = 0
     data_ts_rate = args.rate
     data_ts_delta = 0
+
     def get_data_ts():
         if args.delta:
             return data_ts_base + data_ts_delta
@@ -171,7 +176,7 @@ def main(argv = None):
             # decompress.
             if filename.endswith(".gz"):
                 p = subprocess.Popen(["gzip", "-dc"],
-                                     stdin = f, stdout = subprocess.PIPE)
+                                     stdin=f, stdout=subprocess.PIPE)
                 f = p.stdout
 
             # Try to get a real timestamp from the filename
@@ -184,17 +189,11 @@ def main(argv = None):
             except ValueError:
                 pass
 
-            truncated_lines = 0
-
             # Read each line
             for line in f:
-                # Once in a while a line might be truncated, if we're
+                # The last line in the file may be truncated.
-                # at the end of a file.  Ignore it, but if we ignore
+                # Ignore it; we shouldn't ever see more than one at the end.
-                # too many, bail out.
+                if line[-1] != b'\n'[0]:
-                if line[-1] != '\n':
-                    truncated_lines += 1
-                    if truncated_lines > 3:
-                        raise ParseError(filename, "too many short lines")
                     printf("Ignoring short line in %s\n", filename)
                     continue
 
@@ -203,13 +202,16 @@ def main(argv = None):
                     continue
 
                 # If line starts with a comment, look for a timestamp
-                if line[0] == '#':
+                if line[0] == b'#'[0]:
                     try:
-                        clock_ts = parse_time(line[1:]) + offset_comment
+                        comment = line[1:].decode('utf-8', errors='ignore')
+                        clock_ts = parse_time(comment) + offset_comment
                         print_clock_updated()
                     except ValueError:
                         pass
-                    continue
+                    # for some reason the following line doesn't show up as
+                    # being covered, even though it definitely runs
+                    continue  # pragma: no cover
 
                 # If --delta mode, increment data_ts_delta by the
                 # delta from the file.
@@ -268,8 +270,9 @@ def main(argv = None):
 
                 # Insert it
                 if not args.dry_run:
-                    stream.insert("%d %s" % (data_ts, line))
+                    stream.insert(b"%d %s" % (data_ts, line))
-    print "Done"
+    print("Done")
+
 
 if __name__ == "__main__":
     main()

nilmtools/math.py

@@ -1,10 +1,22 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 # Miscellaenous useful mathematical functions
-from nilmdb.utils.printf import *
-from numpy import *
-from scipy import *
 
+from numpy import *
+import scipy
+
+
+def numpy_raise_errors(func):
+    def wrap(*args, **kwargs):
+        old = seterr('raise')
+        try:
+            return func(*args, **kwargs)
+        finally:
+            seterr(**old)
+    return wrap
+
+
+@numpy_raise_errors
 def sfit4(data, fs):
     """(A, f0, phi, C) = sfit4(data, fs)
 
@@ -25,10 +37,14 @@ def sfit4(data, fs):
     (Verified to match sfit4.m)
     """
     N = len(data)
+    if N < 2:
+        raise ValueError("bad data")
     t = linspace(0, (N-1) / float(fs), N)
 
-    ## Estimate frequency using FFT (step b)
+    #
-    Fc = fft(data)
+    # Estimate frequency using FFT (step b)
+    #
+    Fc = scipy.fft.fft(data)
     F = abs(Fc)
     F[0] = 0   # eliminate DC
 
@@ -66,21 +82,24 @@ def sfit4(data, fs):
         # Now iterate 7 times (step b, plus 6 iterations of step i)
         for idx in range(7):
             D = c_[cos(w*t), sin(w*t), ones(N),
-                  -s[0] * t * sin(w*t) + s[1] * t * cos(w*t) ] # eqn B.16
+                   -s[0] * t * sin(w*t) + s[1] * t * cos(w*t)]  # eqn B.16
-            s = linalg.lstsq(D, data)[0] # eqn B.18
+            s = linalg.lstsq(D, data, rcond=None)[0]  # eqn B.18
-            w = w + s[3]	# update frequency estimate
+            w = w + s[3]  # update frequency estimate
 
-        ## Extract results
+        #
-        A = sqrt(s[0]*s[0] + s[1]*s[1]) # eqn B.21
+        # Extract results
+        #
+        A = sqrt(s[0]*s[0] + s[1]*s[1])  # eqn B.21
         f0 = w / (2*pi)
-        phi = arctan2(s[0], s[1]) # eqn B.22 (flipped for sin instead of cos)
+        phi = arctan2(s[0], s[1])  # eqn B.22 (flipped for sin instead of cos)
         C = s[2]
         return (A, f0, phi, C)
-    except Exception as e:
+    except Exception:  # pragma: no cover  (not sure if we can hit this?)
         # something broke down; just return zeros
         return (0, 0, 0, 0)
 
-def peak_detect(data, delta = 0.1):
+
+def peak_detect(data, delta=0.1):
     """Simple min/max peak detection algorithm, taken from my code
     in the disagg.m from the 10-8-5 paper.
 
@@ -89,7 +108,7 @@ def peak_detect(data, delta = 0.1):
     where n is the row number in 'data', and p is 'data[n]',
     and is_max is True if this is a maximum, False if it's a minimum,
     """
-    peaks = [];
+    peaks = []
     cur_min = (None, inf)
     cur_max = (None, -inf)
     lookformax = False

nilmtools/median.py

@@ -1,31 +1,33 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
-import nilmtools.filter, scipy.signal
+import nilmtools.filter
+import scipy.signal
 
-def main(argv = None):
+
+def main(argv=None):
     f = nilmtools.filter.Filter()
     parser = f.setup_parser("Median Filter")
     group = parser.add_argument_group("Median filter options")
     group.add_argument("-z", "--size", action="store", type=int, default=25,
-                       help = "median filter size (default %(default)s)")
+                       help="median filter size (default %(default)s)")
     group.add_argument("-d", "--difference", action="store_true",
-                       help = "store difference rather than filtered values")
+                       help="store difference rather than filtered values")
 
     try:
         args = f.parse_args(argv)
     except nilmtools.filter.MissingDestination as e:
-        print "Source is %s (%s)" % (e.src.path, e.src.layout)
+        print("Source is %s (%s)" % (e.src.path, e.src.layout))
-        print "Destination %s doesn't exist" % (e.dest.path)
+        print("Destination %s doesn't exist" % (e.dest.path))
-        print "You could make it with a command like:"
+        print("You could make it with a command like:")
-        print "  nilmtool -u %s create %s %s" % (e.dest.url,
+        print("  nilmtool -u %s create %s %s" % (e.dest.url,
-                                                 e.dest.path, e.src.layout)
+                                                 e.dest.path, e.src.layout))
         raise SystemExit(1)
 
-    meta = f.client_src.stream_get_metadata(f.src.path)
+    f.check_dest_metadata({"median_filter_source": f.src.path,
-    f.check_dest_metadata({ "median_filter_source": f.src.path,
+                           "median_filter_size": args.size,
-                            "median_filter_size": args.size,
+                           "median_filter_difference": repr(args.difference)})
-                            "median_filter_difference": repr(args.difference) })
+
+    f.process_numpy(median_filter, args=(args.size, args.difference))
 
-    f.process_numpy(median_filter, args = (args.size, args.difference))
 
 def median_filter(data, interval, args, insert, final):
     (size, diff) = args
@@ -39,5 +41,6 @@ def median_filter(data, interval, args, insert, final):
     insert(data)
     return rows
 
+
 if __name__ == "__main__":
     main()

nilmtools/pipewatch.py

@@ -1,7 +1,7 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 import nilmdb.client
-from nilmdb.utils.printf import *
+from nilmdb.utils.printf import printf, fprintf
 import nilmdb.utils.lock
 import nilmtools
 
@@ -14,14 +14,14 @@ import tempfile
 import threading
 import select
 import signal
-import Queue
+import queue
 import daemon
 
-def parse_args(argv = None):
+
+def parse_args(argv=None):
     parser = argparse.ArgumentParser(
-        formatter_class = argparse.ArgumentDefaultsHelpFormatter,
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
-        version = nilmtools.__version__,
+        description="""\
-        description = """\
     Pipe data from 'generator' to 'consumer'.  This is intended to be
     executed frequently from cron, and will exit if another copy is
     already running.  If 'generator' or 'consumer' returns an error,
@@ -30,6 +30,8 @@ def parse_args(argv = None):
     Intended for use with ethstream (generator) and nilm-insert
     (consumer).  Commands are executed through the shell.
     """)
+    parser.add_argument("-v", "--version", action="version",
+                        version=nilmtools.__version__)
     parser.add_argument("-d", "--daemon", action="store_true",
                         help="Run in background")
     parser.add_argument("-l", "--lock", metavar="FILENAME", action="store",
@@ -38,7 +40,7 @@ def parse_args(argv = None):
                         help="Lock file for detecting running instance")
     parser.add_argument("-t", "--timeout", metavar="SECONDS", action="store",
                         type=float, default=30,
-                        help="Restart if no output from " +
+                        help="Exit if no output from " +
                         "generator for this long")
     group = parser.add_argument_group("commands to execute")
     group.add_argument("generator", action="store",
@@ -49,65 +51,70 @@ def parse_args(argv = None):
 
     return args
 
-def reader_thread(queue, fd):
+
+def reader_thread(q, fd):
     # Read from a file descriptor, write to queue.
     try:
         while True:
             (r, w, x) = select.select([fd], [], [fd], 0.25)
-            if x:
+            if x:  # pragma: no cover -- never expect this to happen
-                raise Exception # generator died?
+                # Very few things are "exceptional conditions";
+                # just TCP OOB data, some TTY state changes, etc.
+                raise Exception
             if not r:
                 # short timeout -- just try again.  This is to catch the
                 # fd being closed elsewhere, which is only detected
                 # when select restarts.
                 continue
             data = os.read(fd, 65536)
-            if data == "": # generator EOF
+            if data == b"":  # generator EOF
                 raise Exception
-            queue.put(data)
+            q.put(data)
     except Exception:
-        queue.put(None)
+        q.put(None)
 
-def watcher_thread(queue, procs):
+
+def watcher_thread(q, procs):
     # Put None in the queue if either process dies
     while True:
         for p in procs:
             if p.poll() is not None:
-                queue.put(None)
+                q.put(None)
                 return
         time.sleep(0.25)
 
+
 def pipewatch(args):
     # Run the processes, etc
     with open(os.devnull, "r") as devnull:
-        generator = subprocess.Popen(args.generator, shell = True,
+        generator = subprocess.Popen(args.generator, shell=True,
-                                     bufsize = -1, close_fds = True,
+                                     bufsize=-1, close_fds=True,
-                                     stdin = devnull,
+                                     stdin=devnull,
-                                     stdout = subprocess.PIPE,
+                                     stdout=subprocess.PIPE,
-                                     stderr = None,
+                                     stderr=None,
-                                     preexec_fn = os.setpgrp)
+                                     preexec_fn=os.setpgrp)
-        consumer = subprocess.Popen(args.consumer, shell = True,
+        consumer = subprocess.Popen(args.consumer, shell=True,
-                                    bufsize = -11, close_fds = True,
+                                    bufsize=-11, close_fds=True,
-                                    stdin = subprocess.PIPE,
+                                    stdin=subprocess.PIPE,
-                                    stdout = None,
+                                    stdout=None,
-                                    stderr = None,
+                                    stderr=None,
-                                    preexec_fn = os.setpgrp)
+                                    preexec_fn=os.setpgrp)
 
-        queue = Queue.Queue(maxsize = 4)
+        q = queue.Queue(maxsize=4)
-        reader = threading.Thread(target = reader_thread,
+        reader = threading.Thread(target=reader_thread,
-                                  args = (queue, generator.stdout.fileno()))
+                                  args=(q, generator.stdout.fileno()))
         reader.start()
-        watcher = threading.Thread(target = watcher_thread,
+        watcher = threading.Thread(target=watcher_thread,
-                                   args = (queue, [generator, consumer]))
+                                   args=(q, [generator, consumer]))
         watcher.start()
         try:
             while True:
                 try:
-                    data = queue.get(True, args.timeout)
+                    data = q.get(True, args.timeout)
                     if data is None:
                         break
                     consumer.stdin.write(data)
-                except Queue.Empty:
+                except queue.Empty:
                     # Timeout: kill the generator
                     fprintf(sys.stderr, "pipewatch: timeout\n")
                     generator.terminate()
@@ -131,7 +138,8 @@ def pipewatch(args):
                     os.killpg(proc.pid, signal.SIGTERM)
                     if poll_timeout(proc, 0.5) is None:
                         os.killpg(proc.pid, signal.SIGKILL)
-            except OSError:
+            except OSError:  # pragma: no cover
+                # (hard to trigger race condition in os.killpg)
                 pass
             return poll_timeout(proc, 0.5)
 
@@ -142,7 +150,7 @@ def pipewatch(args):
         # Consume all remaining data in the queue until the reader
         # and watcher threads are done
         while reader.is_alive() or watcher.is_alive():
-            queue.get(True, 0.1)
+            q.get(True, 0.1)
 
         fprintf(sys.stderr, "pipewatch: generator returned %d, " +
                 "consumer returned %d\n", gret, cret)
@@ -150,7 +158,8 @@ def pipewatch(args):
             sys.exit(0)
         sys.exit(1)
 
-def main(argv = None):
+
+def main(argv=None):
     args = parse_args(argv)
 
     lockfile = open(args.lock, "w")
@@ -160,8 +169,8 @@ def main(argv = None):
         sys.exit(0)
     try:
         # Run as a daemon if requested, otherwise run directly.
-        if args.daemon:
+        if args.daemon:  # pragma: no cover (hard to do from inside test suite)
-            with daemon.DaemonContext(files_preserve = [ lockfile ]):
+            with daemon.DaemonContext(files_preserve=[lockfile]):
                 pipewatch(args)
         else:
             pipewatch(args)
@@ -172,5 +181,6 @@ def main(argv = None):
         except OSError:
             pass
 
+
 if __name__ == "__main__":
     main()

nilmtools/prep.py

@@ -1,23 +1,23 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 # Spectral envelope preprocessor.
 # Requires two streams as input: the original raw data, and sinefit data.
 
-from nilmdb.utils.printf import *
+from nilmdb.utils.printf import printf
 from nilmdb.utils.time import timestamp_to_human
 import nilmtools.filter
 import nilmdb.client
-from numpy import *
+from numpy import pi, zeros, r_, e, real, imag
 import scipy.fftpack
 import scipy.signal
-#from matplotlib import pyplot as p
 import bisect
 from nilmdb.utils.interval import Interval
 
-def main(argv = None):
+
+def main(argv=None):
     # Set up argument parser
     f = nilmtools.filter.Filter()
-    parser = f.setup_parser("Spectral Envelope Preprocessor", skip_paths = True)
+    parser = f.setup_parser("Spectral Envelope Preprocessor", skip_paths=True)
     group = parser.add_argument_group("Prep options")
     group.add_argument("-c", "--column", action="store", type=int,
                        help="Column number (first data column is 1)")
@@ -43,14 +43,10 @@ def main(argv = None):
         args = f.parse_args(argv)
     except nilmtools.filter.MissingDestination as e:
         rec = "float32_%d" % (e.parsed_args.nharm * 2)
-        print "Source is %s (%s)" % (e.src.path, e.src.layout)
+        print("Source is %s (%s)" % (e.src.path, e.src.layout))
-        print "Destination %s doesn't exist" % (e.dest.path)
+        print("Destination %s doesn't exist" % (e.dest.path))
-        print "You could make it with a command like:"
+        print("You could make it with a command like:")
-        print "  nilmtool -u %s create %s %s" % (e.dest.url, e.dest.path, rec)
+        print("  nilmtool -u %s create %s %s" % (e.dest.url, e.dest.path, rec))
-        raise SystemExit(1)
-
-    if f.dest.layout_count != args.nharm * 2:
-        print "error: need", args.nharm*2, "columns in destination stream"
         raise SystemExit(1)
 
     # Check arguments
@@ -68,6 +64,10 @@ def main(argv = None):
     else:
         rotation = args.rotate_rad or 0.0
 
+    if f.dest.layout_count != args.nharm * 2:
+        print("error: need", args.nharm*2, "columns in destination stream")
+        raise SystemExit(1)
+
     # Check the sine fit stream
     client_sinefit = nilmdb.client.Client(args.url)
     sinefit = nilmtools.filter.get_stream_info(client_sinefit, args.sinepath)
@@ -78,40 +78,44 @@ def main(argv = None):
                         + "; expected float32_3")
 
     # Check and set metadata in prep stream
-    f.check_dest_metadata({ "prep_raw_source": f.src.path,
+    f.check_dest_metadata({"prep_raw_source": f.src.path,
-                            "prep_sinefit_source": sinefit.path,
+                           "prep_sinefit_source": sinefit.path,
-                            "prep_column": args.column,
+                           "prep_column": args.column,
-                            "prep_rotation": repr(rotation),
+                           "prep_rotation": repr(rotation),
-                            "prep_nshift": args.nshift })
+                           "prep_nshift": args.nshift})
 
     # Find the intersection of the usual set of intervals we'd filter,
     # and the intervals actually present in sinefit data.  This is
     # what we will process.
     filter_int = f.intervals()
-    sinefit_int = ( Interval(start, end) for (start, end) in
+    sinefit_int = (Interval(start, end) for (start, end) in
-                    client_sinefit.stream_intervals(
+                   client_sinefit.stream_intervals(
-                        args.sinepath, start = f.start, end = f.end) )
+                       args.sinepath, start=f.start, end=f.end))
     intervals = nilmdb.utils.interval.intersection(filter_int, sinefit_int)
 
     # Run the process (using the helper in the filter module)
-    f.process_numpy(process, args = (client_sinefit, sinefit.path, args.column,
+    f.process_numpy(process, args=(client_sinefit, sinefit.path, args.column,
-                                     args.nharm, rotation, args.nshift),
+                                   args.nharm, rotation, args.nshift),
-                    intervals = intervals)
+                    intervals=intervals)
 
 
 def process(data, interval, args, insert_function, final):
     (client, sinefit_path, column, nharm, rotation, nshift) = args
     rows = data.shape[0]
-    data_timestamps = data[:,0]
+    data_timestamps = data[:, 0]
 
     if rows < 2:
         return 0
 
     last_inserted = [nilmdb.utils.time.min_timestamp]
+
     def insert_if_nonoverlapping(data):
         """Call insert_function to insert data, but only if this
         data doesn't overlap with other data that we inserted."""
-        if data[0][0] <= last_inserted[0]:
+        if data[0][0] <= last_inserted[0]:  # pragma: no cover
+            # Getting coverage here is hard -- not sure exactly when
+            # it gets triggered or why this was added; probably some
+            # unlikely edge condition with timestamp rounding or something.
             return
         last_inserted[0] = data[-1][0]
         insert_function(data)
@@ -149,8 +153,8 @@ def process(data, interval, args, insert_function, final):
             out[0, 0] = round(t_min)
             for k in range(nharm):
                 Fk = F[2 * k + 1] * e**(rot * 1j * (k+1))
-                out[0, 2 * k + 1] = -imag(Fk) # Pk
+                out[0, 2 * k + 1] = -imag(Fk)  # Pk
-                out[0, 2 * k + 2] = real(Fk)  # Qk
+                out[0, 2 * k + 2] = real(Fk)   # Qk
 
             insert_if_nonoverlapping(out)
             return idx_max
@@ -158,7 +162,7 @@ def process(data, interval, args, insert_function, final):
         # Extract sinefit data to get zero crossing timestamps.
         # t_min = beginning of period
         # t_max = end of period
-        (t_min, f0, A, C) = [ float(x) for x in sinefit_line.split() ]
+        (t_min, f0, A, C) = [float(x) for x in sinefit_line.split()]
         t_max = t_min + 1e6 / f0
 
         # Compute prep over shifted windows of the period
@@ -180,7 +184,7 @@ def process(data, interval, args, insert_function, final):
     # If we processed no data but there's lots in here, pretend we
     # processed half of it.
     if processed == 0 and rows > 10000:
-        processed = rows / 2
+        processed = rows // 2
         printf("%s: warning: no periods found; skipping %d rows\n",
                timestamp_to_human(data[0][0]), processed)
     else:
@@ -188,5 +192,6 @@ def process(data, interval, args, insert_function, final):
                timestamp_to_human(data[0][0]), processed, rows)
     return processed
 
+
 if __name__ == "__main__":
     main()

nilmtools/sinefit.py

@@ -1,20 +1,19 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 # Sine wave fitting.
-from nilmdb.utils.printf import *
+from nilmdb.utils.printf import printf, sprintf
 import nilmtools.filter
 import nilmtools.math
-import nilmdb.client
 from nilmdb.utils.time import (timestamp_to_human,
                                timestamp_to_seconds,
                                seconds_to_timestamp)
 
-from numpy import *
+import numpy
-from scipy import *
-#import pylab as p
 import sys
+# import pylab as p
 
-def main(argv = None):
+
+def main(argv=None):
     f = nilmtools.filter.Filter()
     parser = f.setup_parser("Sine wave fitting")
     group = parser.add_argument_group("Sine fit options")
@@ -38,10 +37,10 @@ def main(argv = None):
         args = f.parse_args(argv)
     except nilmtools.filter.MissingDestination as e:
         rec = "float32_3"
-        print "Source is %s (%s)" % (e.src.path, e.src.layout)
+        print("Source is %s (%s)" % (e.src.path, e.src.layout))
-        print "Destination %s doesn't exist" % (e.dest.path)
+        print("Destination %s doesn't exist" % (e.dest.path))
-        print "You could make it with a command like:"
+        print("You could make it with a command like:")
-        print "  nilmtool -u %s create %s %s" % (e.dest.url, e.dest.path, rec)
+        print("  nilmtool -u %s create %s %s" % (e.dest.url, e.dest.path, rec))
         raise SystemExit(1)
 
     if args.column is None or args.column < 1:
@@ -53,19 +52,20 @@ def main(argv = None):
     if args.max_freq is None:
         args.max_freq = args.frequency * 2
     if (args.min_freq > args.max_freq or
-        args.min_freq > args.frequency or
+            args.min_freq > args.frequency or
-        args.max_freq < args.frequency):
+            args.max_freq < args.frequency):
         parser.error("invalid min or max frequency")
     if args.min_amp < 0:
         parser.error("min amplitude must be >= 0")
 
-    f.check_dest_metadata({ "sinefit_source": f.src.path,
+    f.check_dest_metadata({"sinefit_source": f.src.path,
-                            "sinefit_column": args.column })
+                           "sinefit_column": args.column})
-    f.process_numpy(process, args = (args.column, args.frequency, args.min_amp,
+    f.process_numpy(process, args=(args.column, args.frequency, args.min_amp,
-                                     args.min_freq, args.max_freq))
+                                   args.min_freq, args.max_freq))
+
 
 class SuppressibleWarning(object):
-    def __init__(self, maxcount = 10, maxsuppress = 100):
+    def __init__(self, maxcount=10, maxsuppress=100):
         self.maxcount = maxcount
         self.maxsuppress = maxsuppress
         self.count = 0
@@ -78,19 +78,20 @@ class SuppressibleWarning(object):
             now = ""
         sys.stderr.write(now + msg)
 
-    def warn(self, msg, seconds = None):
+    def warn(self, msg, seconds=None):
         self.count += 1
         if self.count <= self.maxcount:
             self._write(seconds, msg)
         if (self.count - self.maxcount) >= self.maxsuppress:
-            self.reset(seconds)
+            self.reset()
 
-    def reset(self, seconds = None):
+    def reset(self, seconds=None):
         if self.count > self.maxcount:
             self._write(seconds, sprintf("(%d warnings suppressed)\n",
                                          self.count - self.maxcount))
         self.count = 0
 
+
 def process(data, interval, args, insert_function, final):
     (column, f_expected, a_min, f_min, f_max) = args
     rows = data.shape[0]
@@ -98,7 +99,7 @@ def process(data, interval, args, insert_function, final):
     # Estimate sampling frequency from timestamps
     ts_min = timestamp_to_seconds(data[0][0])
     ts_max = timestamp_to_seconds(data[-1][0])
-    if ts_min >= ts_max:
+    if ts_min >= ts_max:  # pragma: no cover; process_numpy shouldn't send this
         return 0
     fs = (rows-1) / (ts_max - ts_min)
 
@@ -119,7 +120,7 @@ def process(data, interval, args, insert_function, final):
     while start < (rows - N):
         this = data[start:start+N, column]
         t_min = timestamp_to_seconds(data[start, 0])
-        t_max = timestamp_to_seconds(data[start+N-1, 0])
+        # t_max = timestamp_to_seconds(data[start+N-1, 0])
 
         # Do 4-parameter sine wave fit
         (A, f0, phi, C) = nilmtools.math.sfit4(this, fs)
@@ -138,13 +139,13 @@ def process(data, interval, args, insert_function, final):
             start += N
             continue
 
-        #p.plot(arange(N), this)
+        # p.plot(arange(N), this)
-        #p.plot(arange(N), A * sin(f0/fs * 2 * pi * arange(N) + phi) + C, 'g')
+        # p.plot(arange(N), A * sin(f0/fs * 2 * pi * arange(N) + phi) + C, 'g')
 
         # Period starts when the argument of sine is 0 degrees,
         # so we're looking for sample number:
         #     n = (0 - phi) / (f0/fs * 2 * pi)
-        zc_n = (0 - phi) / (f0 / fs * 2 * pi)
+        zc_n = (0 - phi) / (f0 / fs * 2 * numpy.pi)
         period_n = fs/f0
 
         # Add periods to make N positive
@@ -155,14 +156,16 @@ def process(data, interval, args, insert_function, final):
         # Mark the zero crossings until we're a half period away
         # from the end of the window
         while zc_n < (N - period_n/2):
-            #p.plot(zc_n, C, 'ro')
+            # p.plot(zc_n, C, 'ro')
             t = t_min + zc_n / fs
             if (last_inserted_timestamp is None or
-                t > last_inserted_timestamp):
+                    t > last_inserted_timestamp):
                 insert_function([[seconds_to_timestamp(t), f0, A, C]])
                 last_inserted_timestamp = t
                 warn.reset(t)
-            else:
+            else:  # pragma: no cover -- this is hard to trigger,
+                # if it's even possible at all; I think it would require
+                # some jitter in how the waves fit, across a window boundary.
                 warn.warn("timestamp overlap\n", t)
             num_zc += 1
             last_zc = zc_n
@@ -175,8 +178,8 @@ def process(data, interval, args, insert_function, final):
             advance = min(last_zc + period_n/4, N)
         else:
             advance = N/2
-        #p.plot(advance, C, 'go')
+        # p.plot(advance, C, 'go')
-        #p.show()
+        # p.show()
 
         start = int(round(start + advance))
 
@@ -190,5 +193,6 @@ def process(data, interval, args, insert_function, final):
     printf("%sMarked %d zero-crossings in %d rows\n", now, num_zc, start)
     return start
 
+
 if __name__ == "__main__":
     main()

nilmtools/trainola.py

@@ -1,36 +1,35 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
-from nilmdb.utils.printf import *
+from nilmdb.utils.printf import printf, sprintf
 import nilmdb.client
 import nilmtools.filter
 import nilmtools.math
-from nilmdb.utils.time import (timestamp_to_human,
+from nilmdb.utils.time import timestamp_to_seconds
-                               timestamp_to_seconds,
+import datetime_tz
-                               seconds_to_timestamp)
-from nilmdb.utils import datetime_tz
 from nilmdb.utils.interval import Interval
 
 import numpy as np
 import scipy
 import scipy.signal
 from numpy.core.umath_tests import inner1d
-import nilmrun
 from collections import OrderedDict
-import sys
 import time
 import functools
 import collections
 
+
 class DataError(ValueError):
     pass
 
+
 def build_column_mapping(colinfo, streaminfo):
     """Given the 'columns' list from the JSON data, verify and
     pull out a dictionary mapping for the column names/numbers."""
     columns = OrderedDict()
     for c in colinfo:
         col_num = c['index'] + 1  # skip timestamp
-        if (c['name'] in columns.keys() or col_num in columns.values()):
+        if (c['name'] in list(columns.keys()) or
+                col_num in list(columns.values())):
             raise DataError("duplicated columns")
         if (c['index'] < 0 or c['index'] >= streaminfo.layout_count):
             raise DataError("bad column number")
@@ -39,8 +38,9 @@ def build_column_mapping(colinfo, streaminfo):
         raise DataError("no columns")
     return columns
 
+
 class Exemplar(object):
-    def __init__(self, exinfo, min_rows = 10, max_rows = 100000):
+    def __init__(self, exinfo, min_rows=10, max_rows=100000):
         """Given a dictionary entry from the 'exemplars' input JSON,
         verify the stream, columns, etc.  Then, fetch all the data
         into self.data."""
@@ -63,7 +63,8 @@ class Exemplar(object):
         self.columns = build_column_mapping(exinfo['columns'], self.info)
 
         # Count points
-        self.count = self.client.stream_count(self.stream, self.start, self.end)
+        self.count = self.client.stream_count(self.stream,
+                                              self.start, self.end)
 
         # Verify count
         if self.count == 0:
@@ -77,13 +78,13 @@ class Exemplar(object):
         datagen = self.client.stream_extract_numpy(self.stream,
                                                    self.start, self.end,
                                                    self.info.layout,
-                                                   maxrows = self.count)
+                                                   maxrows=self.count)
         self.data = list(datagen)[0]
 
         # Extract just the columns that were specified in self.columns,
         # skipping the timestamp.
-        extract_columns = [ value for (key, value) in self.columns.items() ]
+        extract_cols = [value for (key, value) in list(self.columns.items())]
-        self.data = self.data[:,extract_columns]
+        self.data = self.data[:, extract_cols]
 
         # Fix the column indices in e.columns, since we removed/reordered
         # columns in self.data
@@ -102,20 +103,23 @@ class Exemplar(object):
 
     def __str__(self):
         return sprintf("\"%s\" %s [%s] %s rows",
-                       self.name, self.stream, ",".join(self.columns.keys()),
+                       self.name, self.stream,
+                       ",".join(list(self.columns.keys())),
                        self.count)
 
+
 def timestamp_to_short_human(timestamp):
     dt = datetime_tz.datetime_tz.fromtimestamp(timestamp_to_seconds(timestamp))
     return dt.strftime("%H:%M:%S")
 
+
 def trainola_matcher(data, interval, args, insert_func, final_chunk):
     """Perform cross-correlation match"""
-    ( src_columns, dest_count, exemplars ) = args
+    (src_columns, dest_count, exemplars) = args
     nrows = data.shape[0]
 
     # We want at least 10% more points than the widest exemplar.
-    widest = max([ x.count for x in exemplars ])
+    widest = max([x.count for x in exemplars])
     if (widest * 1.1) > nrows:
         return 0
 
@@ -201,11 +205,12 @@ def trainola_matcher(data, interval, args, insert_func, final_chunk):
     # Return how many rows we processed
     valid = max(valid, 0)
     printf("  [%s] matched %d exemplars in %d rows\n",
-           timestamp_to_short_human(data[0][0]), np.sum(out[:,1:]), valid)
+           timestamp_to_short_human(data[0][0]), np.sum(out[:, 1:]), valid)
     return valid
 
+
 def trainola(conf):
-    print "Trainola", nilmtools.__version__
+    print("Trainola", nilmtools.__version__)
 
     # Load main stream data
     url = conf['url']
@@ -227,12 +232,14 @@ def trainola(conf):
         raise DataError("destination path '" + dest_path + "' does not exist")
 
     printf("Source:\n")
-    printf("  %s [%s]\n", src.path, ",".join(src_columns.keys()))
+    printf("  %s [%s]\n", src.path, ",".join(list(src_columns.keys())))
     printf("Destination:\n")
     printf("  %s (%s columns)\n", dest.path, dest.layout_count)
 
     # Pull in the exemplar data
     exemplars = []
+    if 'exemplars' not in conf:
+        raise DataError("missing exemplars")
     for n, exinfo in enumerate(conf['exemplars']):
         printf("Loading exemplar %d:\n", n)
         e = Exemplar(exinfo)
@@ -254,16 +261,16 @@ def trainola(conf):
                                         "available in source data", n, col))
 
     # Figure out which intervals we should process
-    intervals = ( Interval(s, e) for (s, e) in
+    intervals = (Interval(s, e) for (s, e) in
-                  src_client.stream_intervals(src_path,
+                 src_client.stream_intervals(src_path,
-                                              diffpath = dest_path,
+                                             diffpath=dest_path,
-                                              start = start, end = end) )
+                                             start=start, end=end))
     intervals = nilmdb.utils.interval.optimize(intervals)
 
     # Do the processing
     rows = 100000
     extractor = functools.partial(src_client.stream_extract_numpy,
-                                  src.path, layout = src.layout, maxrows = rows)
+                                  src.path, layout=src.layout, maxrows=rows)
     inserter = functools.partial(dest_client.stream_insert_numpy_context,
                                  dest.path)
     start = time.time()
@@ -281,8 +288,9 @@ def trainola(conf):
     printf("Done. Processed %.2f seconds per second.\n",
            processed_time / elapsed)
 
-def main(argv = None):
+
-    import simplejson as json
+def main(argv=None):
+    import json
     import sys
 
     if argv is None:
@@ -306,12 +314,12 @@ def main(argv = None):
     try:
         # Passed in a JSON string (e.g. on the command line)
         conf = json.loads(argv[0])
-    except TypeError as e:
+    except TypeError:
         # Passed in the config dictionary (e.g. from NilmRun)
         conf = argv[0]
 
     return trainola(conf)
 
+
 if __name__ == "__main__":
     main()
-

requirements.txt

@@ -0,0 +1,7 @@
+nilmdb>=2.0.3
+numpy==1.19.1
+scipy==1.5.2
+python-daemon==2.2.4
+docutils==0.16
+lockfile==0.12.2
+psutil==5.7.2

setup.cfg

@@ -0,0 +1,39 @@
+[aliases]
+test = nosetests
+
+[nosetests]
+# Note: values must be set to 1, and have no comments on the same line,
+# for "python setup.py nosetests" to work correctly.
+nocapture=1
+# Comment this out to see CherryPy logs on failure:
+nologcapture=1
+with-coverage=1
+cover-inclusive=1
+cover-package=nilmtools
+cover-erase=1
+# this works, puts html output in cover/ dir:
+# cover-html=1
+# need nose 1.1.3 for this:
+# cover-branches=1
+#debug=nose
+#debug-log=nose.log
+stop=1
+verbosity=2
+tests=tests
+
+[versioneer]
+VCS=git
+style=pep440
+versionfile_source=nilmtools/_version.py
+versionfile_build=nilmtools/_version.py
+tag_prefix=nilmtools-
+parentdir_prefix=nilmtools-
+
+[flake8]
+exclude=_version.py
+extend-ignore=E731
+per-file-ignores=math.py:F403,F405
+
+[pylint]
+ignore=_version.py
+disable=C0103,C0111,R0913,R0914

setup.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 # To release a new version, tag it:
 #   git tag -a nilmtools-1.1 -m "Version 1.1"
@@ -6,67 +6,31 @@
 # Then just package it up:
 #   python setup.py sdist
 
-# This is supposed to be using Distribute:
-#
-#   distutils provides a "setup" method.
-#   setuptools is a set of monkeypatches on top of that.
-#   distribute is a particular version/implementation of setuptools.
-#
-# So we don't really know if this is using the old setuptools or the
-# Distribute-provided version of setuptools.
-
-import traceback
 import sys
 import os
-
+from setuptools import setup
-try:
-    from setuptools import setup, find_packages
-    import distutils.version
-except ImportError:
-    traceback.print_exc()
-    print "Please install the prerequisites listed in README.txt"
-    sys.exit(1)
 
 # Versioneer manages version numbers from git tags.
 # https://github.com/warner/python-versioneer
 import versioneer
-versioneer.versionfile_source = 'nilmtools/_version.py'
-versioneer.versionfile_build = 'nilmtools/_version.py'
-versioneer.tag_prefix = 'nilmtools-'
-versioneer.parentdir_prefix = 'nilmtools-'
 
-# Hack to workaround logging/multiprocessing issue:
+# Get list of requirements to use in `install_requires` below.  Note
-# https://groups.google.com/d/msg/nose-users/fnJ-kAUbYHQ/_UsLN786ygcJ
+# that we don't make a distinction between things that are actually
-try: import multiprocessing
+# required for end-users vs developers (or use `test_requires` or
-except: pass
+# anything else) -- just install everything for simplicity.
-
+install_requires = open('requirements.txt').readlines()
-# We need a MANIFEST.in.  Generate it here rather than polluting the
-# repository with yet another setup-related file.
-with open("MANIFEST.in", "w") as m:
-    m.write("""
-# Root
-include README.txt
-include setup.py
-include versioneer.py
-include Makefile
-""")
 
 # Run setup
 setup(name='nilmtools',
       version = versioneer.get_version(),
       cmdclass = versioneer.get_cmdclass(),
-      url = 'https://git.jim.sh/jim/lees/nilmtools.git',
+      url = 'https://git.jim.sh/nilm/nilmtools.git',
       author = 'Jim Paris',
       description = "NILM Database Tools",
       long_description = "NILM Database Tools",
       license = "Proprietary",
       author_email = 'jim@jtan.com',
-      install_requires = [ 'nilmdb >= 1.8.5',
+      install_requires = install_requires,
-                           'numpy',
-                           'scipy',
-                           'python-daemon >= 1.5',
-                           #'matplotlib',
-                           ],
       packages = [ 'nilmtools',
                    ],
       entry_points = {

tests/data/cleanup-bad.cfg

@@ -0,0 +1,2 @@
+[/newton/*]
+keep = 3

tests/data/cleanup-nodecim.cfg

@@ -0,0 +1,4 @@
+[/newton/*]
+keep = 3w
+rate = 8000
+decimated = false

tests/data/cleanup.cfg

@@ -0,0 +1,13 @@
+[/newton/*]
+keep = 3w
+rate = 8000
+decimated = true
+
+[/sf/*]
+keep = 0.01h
+dummy = xxx
+
+[/empty/foo]
+
+[/nonexistent/bar]
+

tests/data/prep-20120323T1004-delta

@@ -0,0 +1,12 @@
+# deltas are in microseconds
+1000000 2.61246e+05  2.22735e+05  4.60340e+03  2.58221e+03  8.42804e+03  3.41890e+03  9.57898e+02  4.00585e+03  
+1000000 2.56439e+05  2.24775e+05  2.92897e+03  4.66646e+03  7.58491e+03  3.57351e+03  -4.34171e+02  2.98819e+03  
+1000000 2.51903e+05  2.23202e+05  4.23696e+03  3.49363e+03  8.53493e+03  4.29416e+03  8.49573e+02  2.38189e+03  
+1000000 2.57625e+05  2.20247e+05  5.47017e+03  1.35872e+03  9.18903e+03  4.56136e+03  2.65599e+03  2.60912e+03  
+1000000 2.63375e+05  2.20706e+05  4.51842e+03  1.80758e+03  8.17208e+03  4.17463e+03  2.57884e+03  3.32848e+03  
+1000000 2.59221e+05  2.22346e+05  2.98879e+03  3.66264e+03  6.87274e+03  3.94223e+03  1.25928e+03  3.51786e+03  
+50000000 2.51918e+05  2.22281e+05  4.22677e+03  2.84764e+03  7.78323e+03  3.81659e+03  8.04944e+02  3.46314e+03  
+1000000 2.54478e+05  2.21701e+05  5.61366e+03  1.02262e+03  9.26581e+03  3.50152e+03  1.29331e+03  3.07271e+03  
+1000000 2.59568e+05  2.22945e+05  4.97190e+03  1.28250e+03  8.62081e+03  4.06316e+03  1.85717e+03  2.61990e+03  
+1000000 2.57269e+05  2.23697e+05  3.60527e+03  3.05749e+03  7.22363e+03  4.90330e+03  1.93736e+03  2.35357e+03  
+1000000 2.52274e+05  2.21438e+05  5.01228e+03  2.86309e+03  7.87115e+03  4.80448e+03  2.18291e+03  2.93397e+03  

tests/data/prep-20120323T1004-delta2

@@ -0,0 +1,12 @@
+# deltas are in microseconds
+1000000 2.61246e+05  2.22735e+05  4.60340e+03  2.58221e+03  8.42804e+03  3.41890e+03  9.57898e+02  4.00585e+03  
+1000000 2.56439e+05  2.24775e+05  2.92897e+03  4.66646e+03  7.58491e+03  3.57351e+03  -4.34171e+02  2.98819e+03  
+1000000 2.51903e+05  2.23202e+05  4.23696e+03  3.49363e+03  8.53493e+03  4.29416e+03  8.49573e+02  2.38189e+03  
+1000000 2.57625e+05  2.20247e+05  5.47017e+03  1.35872e+03  9.18903e+03  4.56136e+03  2.65599e+03  2.60912e+03  
+1000000 2.63375e+05  2.20706e+05  4.51842e+03  1.80758e+03  8.17208e+03  4.17463e+03  2.57884e+03  3.32848e+03  
+1000000 2.59221e+05  2.22346e+05  2.98879e+03  3.66264e+03  6.87274e+03  3.94223e+03  1.25928e+03  3.51786e+03  
+1000000 2.51918e+05  2.22281e+05  4.22677e+03  2.84764e+03  7.78323e+03  3.81659e+03  8.04944e+02  3.46314e+03  
+1000000 2.54478e+05  2.21701e+05  5.61366e+03  1.02262e+03  9.26581e+03  3.50152e+03  1.29331e+03  3.07271e+03  
+1000000 2.59568e+05  2.22945e+05  4.97190e+03  1.28250e+03  8.62081e+03  4.06316e+03  1.85717e+03  2.61990e+03  
+1000000 2.57269e+05  2.23697e+05  3.60527e+03  3.05749e+03  7.22363e+03  4.90330e+03  1.93736e+03  2.35357e+03  
+1000000 2.52274e+05  2.21438e+05  5.01228e+03  2.86309e+03  7.87115e+03  4.80448e+03  2.18291e+03  2.93397e+03  

tests/data/prep-20120323T1004-delta3

@@ -0,0 +1,3 @@
+# deltas are in microseconds
+1000000A 2.61246e+05  2.22735e+05  4.60340e+03  2.58221e+03  8.42804e+03  3.41890e+03  9.57898e+02  4.00585e+03  
+BAD_DELTA 2.56439e+05  2.24775e+05  2.92897e+03  4.66646e+03  7.58491e+03  3.57351e+03  -4.34171e+02  2.98819e+03  

tests/data/prep-notime

@@ -0,0 +1,3 @@
+# comments are cool?  what if they contain →UNICODEâ†<C3A2> or invalid utf-8 like Ã(
+2.66568e+05  2.24029e+05  5.16140e+03  2.52517e+03  8.35084e+03  3.72470e+03  1.35534e+03  2.03900e+03  
+2.57914e+05  2.27183e+05  4.30368e+03  4.13080e+03  7.25535e+03  4.89047e+03  1.63859e+03  1.93496e+03  

tests/data/trainola-bad1.js

@@ -0,0 +1,7 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ ]
+}

tests/data/trainola-bad10.js

@@ -0,0 +1,17 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ],
+  "exemplars": [
+      { "name": "Big ON",
+        "url": "http://localhost:32182/",
+        "stream": "/train/data",
+        "start": 34000000,
+        "end": 34000001,
+        "dest_column": 0,
+        "columns": [ { "name": "P1", "index": 0 } ]
+      }
+  ]
+}

tests/data/trainola-bad11.js

@@ -0,0 +1,17 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ],
+  "exemplars": [
+      { "name": "Big ON",
+        "url": "http://localhost:32182/",
+        "stream": "/train/big",
+        "start": 0,
+        "end": 110000,
+        "dest_column": 0,
+        "columns": [ { "name": "P1", "index": 0 } ]
+      }
+  ]
+}

tests/data/trainola-bad12.js

@@ -0,0 +1,17 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ],
+  "exemplars": [
+      { "name": "Big ON",
+        "url": "http://localhost:32182/",
+        "stream": "/train/data",
+        "start": 34000000,
+        "end": 36000000,
+        "dest_column": 0,
+        "columns": [ { "name": "FOO", "index": 0 } ]
+      }
+  ]
+}

tests/data/trainola-bad2.js

@@ -0,0 +1,8 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 },
+               { "name": "P1", "index": 1 } ]
+}

tests/data/trainola-bad3.js

@@ -0,0 +1,7 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 10 } ]
+}

tests/data/trainola-bad4.js

@@ -0,0 +1,7 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/a/b",
+  "stream": "/c/d",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ]
+}

tests/data/trainola-bad5.js

@@ -0,0 +1,7 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/a/b",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ]
+}

tests/data/trainola-bad6.js

@@ -0,0 +1,7 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ]
+}

tests/data/trainola-bad7.js

@@ -0,0 +1,8 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ],
+  "exemplars": [ ]
+}

tests/data/trainola-bad8.js

@@ -0,0 +1,17 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ],
+  "exemplars": [
+      { "name": "Big ON",
+        "url": "http://localhost:32182/",
+        "stream": "/e/f",
+        "start": 34000000,
+        "end": 36000000,
+        "dest_column": 0,
+        "columns": [ { "name": "P1", "index": 0 } ]
+      }
+  ]
+}

tests/data/trainola-bad9.js

@@ -0,0 +1,17 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ],
+  "exemplars": [
+      { "name": "Big ON",
+        "url": "http://localhost:32182/",
+        "stream": "/train/data",
+        "start": 10034000000,
+        "end": 10035000000,
+        "dest_column": 0,
+        "columns": [ { "name": "P1", "index": 0 } ]
+      }
+  ]
+}

tests/data/trainola1.js

@@ -0,0 +1,25 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ],
+  "exemplars": [
+      { "name": "Big ON",
+        "url": "http://localhost:32182/",
+        "stream": "/train/data",
+        "start": 34000000,
+        "end": 36000000,
+        "dest_column": 0,
+        "columns": [ { "name": "P1", "index": 0 } ]
+      },
+      { "name": "Big OFF",
+        "url": "http://localhost:32182/",
+        "stream": "/train/data",
+        "start": 36000000,
+        "end": 38000000,
+        "dest_column": 1,
+        "columns": [ { "name": "P1", "index": 0 } ]
+      }
+  ]
+}

tests/data/trainola2.js

@@ -0,0 +1,17 @@
+{ "url": "http://localhost:32182/",
+  "dest_stream": "/train/matches2",
+  "stream": "/train/data",
+  "start": 0,
+  "end": 100000000,
+  "columns": [ { "name": "P1", "index": 0 } ],
+  "exemplars": [
+      { "name": "a",
+        "url": "http://localhost:32182/",
+        "stream": "/train/data",
+        "start": 1000000,
+        "end": 2000000,
+        "dest_column": 0,
+        "columns": [ { "name": "P1", "index": 0 } ]
+      }
+  ]
+}

tests/data/trunc1

@@ -0,0 +1 @@
+1

tests/data/trunc2

@@ -0,0 +1 @@
+1 2

tests/data/trunc3

@@ -0,0 +1,5 @@
+# this has blank lines
+
+# and timestamps: 2000-01-01 12:00:00
+# and then the last is truncated
+1 2 3

tests/data/trunc4

@@ -0,0 +1 @@
+1 2 3 4

tests/runtests.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+
+import nose
+import os
+import sys
+import glob
+from collections import OrderedDict
+
+# Change into parent dir
+os.chdir(os.path.dirname(os.path.realpath(__file__)) + "/..")
+
+class JimOrderPlugin(nose.plugins.Plugin):
+    """When searching for tests and encountering a directory that
+    contains a 'test.order' file, run tests listed in that file, in the
+    order that they're listed.  Globs are OK in that file and duplicates
+    are removed."""
+    name = 'jimorder'
+    score = 10000
+
+    def prepareTestLoader(self, loader):
+        def wrap(func):
+            def wrapper(name, *args, **kwargs):
+                addr = nose.selector.TestAddress(
+                    name, workingDir=loader.workingDir)
+                try:
+                    order = os.path.join(addr.filename, "test.order")
+                except Exception:
+                    order = None
+                if order and os.path.exists(order):
+                    files = []
+                    for line in open(order):
+                        line = line.split('#')[0].strip()
+                        if not line:
+                            continue
+                        fn = os.path.join(addr.filename, line.strip())
+                        files.extend(sorted(glob.glob(fn)) or [fn])
+                    files = list(OrderedDict.fromkeys(files))
+                    tests = [ wrapper(fn, *args, **kwargs) for fn in files ]
+                    return loader.suiteClass(tests)
+                return func(name, *args, **kwargs)
+            return wrapper
+        loader.loadTestsFromName = wrap(loader.loadTestsFromName)
+        return loader
+
+# Use setup.cfg for most of the test configuration.  Adding
+# --with-jimorder here means that a normal "nosetests" run will
+# still work, it just won't support test.order.
+if __name__ == "__main__":
+    nose.main(addplugins = [ JimOrderPlugin() ],
+              argv = sys.argv + ["--with-jimorder"])

tests/test.order

@@ -0,0 +1,3 @@
+test.py
+
+test*.py

tests/test.py

@@ -0,0 +1,911 @@
+# -*- coding: utf-8 -*-
+
+import nilmtools.copy_one
+import nilmtools.cleanup
+import nilmtools.copy_one
+import nilmtools.copy_wildcard
+import nilmtools.decimate_auto
+import nilmtools.decimate
+import nilmtools.insert
+import nilmtools.median
+import nilmtools.pipewatch
+import nilmtools.prep
+import nilmtools.sinefit
+import nilmtools.trainola
+
+from nilmdb.utils.interval import Interval
+
+from nose.tools import assert_raises
+import unittest
+
+import numpy
+import math
+import json
+import random
+from testutil.helpers import *
+import subprocess
+import traceback
+import os
+import atexit
+import signal
+import functools
+
+from urllib.request import urlopen
+from nilmtools.filter import ArgumentError
+
+def run_cherrypy_server(path, port, event):
+    db = nilmdb.utils.serializer_proxy(nilmdb.server.NilmDB)(path)
+    server = nilmdb.server.Server(db, host="127.0.0.1",
+                                  port=port, stoppable=True)
+    server.start(blocking = True, event = event)
+    db.close()
+
+class CommandTester():
+
+    url = "http://localhost:32182/"
+    url2 = "http://localhost:32183/"
+
+    @classmethod
+    def setup_class(cls):
+        # We need two servers running for "copy_multiple", but
+        # cherrypy uses globals and can only run once per process.
+        # Using multiprocessing with "spawn" method should work in
+        # theory, but is hard to get working when the test suite is
+        # spawned directly by nosetests (rather than ./run-tests.py).
+        # Instead, just run the real nilmdb-server that got installed
+        # along with our nilmdb dependency.
+        def terminate_servers():
+            for p in cls.servers:
+                p.terminate()
+        atexit.register(terminate_servers)
+        cls.servers = []
+        for (path, port) in (("tests/testdb1", 32182),
+                             ("tests/testdb2", 32183)):
+            def listening():
+                try:
+                    urlopen(f"http://127.0.0.1:{port}/", timeout=0.1)
+                    return True
+                except Exception as e:
+                    return False
+
+            if listening():
+                raise Exception(f"another server already running on {port}")
+
+            recursive_unlink(path)
+            p = subprocess.Popen(["nilmdb-server",
+                                  "--address", "127.0.0.1",
+                                  "--database", path,
+                                  "--port", str(port),
+                                  "--quiet",
+                                  "--traceback"],
+                                 stdin=subprocess.DEVNULL,
+                                 stdout=subprocess.DEVNULL)
+            for i in range(50):
+                if listening():
+                    break
+                time.sleep(0.1)
+            else:
+                raise Exception(f"server didn't start on port {port}")
+
+    @classmethod
+    def teardown_class(cls):
+        for p in cls.servers:
+            p.terminate()
+
+    def run(self, arg_string, infile=None, outfile=None):
+        """Run a cmdline client with the specified argument string,
+        passing the given input.  Save the output and exit code."""
+        os.environ['NILMDB_URL'] = self.url
+        self.last_args = arg_string
+        class stdio_wrapper:
+            def __init__(self, stdin, stdout, stderr):
+                self.io = (stdin, stdout, stderr)
+            def __enter__(self):
+                self.saved = ( sys.stdin, sys.stdout, sys.stderr )
+                ( sys.stdin, sys.stdout, sys.stderr ) = self.io
+            def __exit__(self, type, value, traceback):
+                ( sys.stdin, sys.stdout, sys.stderr ) = self.saved
+        # Empty input if none provided
+        if infile is None:
+            infile = io.TextIOWrapper(io.BytesIO(b""))
+        # Capture stderr
+        errfile = io.TextIOWrapper(io.BytesIO())
+        if outfile is None:
+            # If no output file, capture stdout with stderr
+            outfile = errfile
+        with stdio_wrapper(infile, outfile, errfile) as s:
+            try:
+                args = shlex.split(arg_string)
+                sys.argv[0] = "test_runner"
+                self.main(args)
+                sys.exit(0)
+            except SystemExit as e:
+                exitcode = e.code
+            except Exception as e:
+                traceback.print_exc()
+                exitcode = 1
+
+        # Capture raw binary output, and also try to decode a Unicode
+        # string copy.
+        self.captured_binary = outfile.buffer.getvalue()
+        try:
+            outfile.seek(0)
+            self.captured = outfile.read()
+        except UnicodeDecodeError:
+            self.captured = None
+
+        self.exitcode = exitcode
+
+    def ok(self, arg_string, infile = None):
+        self.run(arg_string, infile)
+        if self.exitcode != 0:
+            self.dump()
+            eq_(self.exitcode, 0)
+
+    def fail(self, arg_string, infile=None, exitcode=None):
+        self.run(arg_string, infile)
+        if exitcode is not None and self.exitcode != exitcode:
+            # Wrong exit code
+            self.dump()
+            eq_(self.exitcode, exitcode)
+        if self.exitcode == 0:
+            # Success, when we wanted failure
+            self.dump()
+            ne_(self.exitcode, 0)
+
+    def contain(self, checkstring, contain=True):
+        if contain:
+            in_(checkstring, self.captured)
+        else:
+            nin_(checkstring, self.captured)
+
+    def match(self, checkstring):
+        eq_(checkstring, self.captured)
+
+    def matchfile(self, file):
+        # Captured data should match file contents exactly
+        with open(file) as f:
+            contents = f.read()
+            if contents != self.captured:
+                print("--- reference file (first 1000 bytes):\n")
+                print(contents[0:1000] + "\n")
+                print("--- captured data (first 1000 bytes):\n")
+                print(self.captured[0:1000] + "\n")
+                zipped = itertools.zip_longest(contents, self.captured)
+                for (n, (a, b)) in enumerate(zipped):
+                    if a != b:
+                        print("--- first difference is at offset", n)
+                        print("--- reference:", repr(a))
+                        print("---  captured:", repr(b))
+                        break
+                raise AssertionError("captured data doesn't match " + file)
+
+    def matchfilecount(self, file):
+        # Last line of captured data should match the number of
+        # non-commented lines in file
+        count = 0
+        with open(file) as f:
+            for line in f:
+                if line[0] != '#':
+                    count += 1
+        eq_(self.captured.splitlines()[-1], sprintf("%d", count))
+
+    def dump(self):
+        printf("\n===args start===\n%s\n===args end===\n", self.last_args)
+        printf("===dump start===\n%s===dump end===\n", self.captured)
+
+
+class TestAllCommands(CommandTester):
+
+    def test_00_load_data(self):
+        client = nilmdb.client.Client(url=self.url)
+        client.stream_create("/newton/prep", "float32_8")
+        client.stream_set_metadata("/newton/prep",
+                                   { "description": "newton" })
+
+        for ts in ("20120323T1000", "20120323T1002", "20120323T1004"):
+            start = nilmdb.utils.time.parse_time(ts)
+            fn = f"tests/data/prep-{ts}"
+            data = nilmdb.utils.timestamper.TimestamperRate(fn, start, 120)
+            client.stream_insert("/newton/prep", data);
+
+    def test_01_copy(self):
+        self.main = nilmtools.copy_one.main
+
+        client = nilmdb.client.Client(url=self.url)
+
+        # basic arguments
+        self.fail(f"")
+        self.fail(f"no-such-src no-such-dest")
+        self.contain("source path no-such-src not found")
+        self.fail(f"-u {self.url} no-such-src no-such-dest")
+
+        # nonexistent dest
+        self.fail(f"/newton/prep /newton/prep-copy")
+        self.contain("Destination /newton/prep-copy doesn't exist")
+
+        # wrong type
+        client.stream_create("/newton/prep-copy-wrongtype", "uint16_6")
+        self.fail(f"/newton/prep /newton/prep-copy-wrongtype")
+        self.contain("wrong number of fields")
+
+        # copy with metadata, and compare
+        client.stream_create("/newton/prep-copy", "float32_8")
+        self.ok(f"/newton/prep /newton/prep-copy")
+        a = list(client.stream_extract("/newton/prep"))
+        b = list(client.stream_extract("/newton/prep-copy"))
+        eq_(a, b)
+        a = client.stream_get_metadata("/newton/prep")
+        b = client.stream_get_metadata("/newton/prep-copy")
+        eq_(a, b)
+
+        # copy with no metadata
+        client.stream_create("/newton/prep-copy-nometa", "float32_8")
+        self.ok(f"--nometa /newton/prep /newton/prep-copy-nometa")
+        a = list(client.stream_extract("/newton/prep"))
+        b = list(client.stream_extract("/newton/prep-copy-nometa"))
+        eq_(a, b)
+        a = client.stream_get_metadata("/newton/prep")
+        b = client.stream_get_metadata("/newton/prep-copy-nometa")
+        ne_(a, b)
+
+    def test_02_copy_wildcard(self):
+        self.main = nilmtools.copy_wildcard.main
+
+        client1 = nilmdb.client.Client(url=self.url)
+        client2 = nilmdb.client.Client(url=self.url2)
+
+        # basic arguments
+        self.fail(f"")
+        self.fail(f"/newton")
+
+        self.fail(f"-u {self.url} -U {self.url} /newton")
+        self.contain("URL must be different")
+
+        # no matches; silent
+        self.ok(f"-u {self.url} -U {self.url2} /newton")
+        self.ok(f"-u {self.url} -U {self.url2} /asdf*")
+        self.ok(f"-u {self.url2} -U {self.url} /newton*")
+        eq_(client2.stream_list(), [])
+
+        # this won't actually copy, but will still create streams
+        self.ok(f"-u {self.url} -U {self.url2} --dry-run /newton*")
+        self.contain("Creating destination stream /newton/prep-copy")
+        eq_(len(list(client2.stream_extract("/newton/prep"))), 0)
+
+        # this should copy a bunch
+        self.ok(f"-u {self.url} -U {self.url2} /*")
+        self.contain("Creating destination stream /newton/prep-copy", False)
+        eq_(client1.stream_list(), client2.stream_list())
+        eq_(list(client1.stream_extract("/newton/prep")),
+            list(client2.stream_extract("/newton/prep")))
+        eq_(client1.stream_get_metadata("/newton/prep"),
+            client2.stream_get_metadata("/newton/prep"))
+
+        # repeating it is OK; it just won't recreate streams.
+        # Let's try with --nometa too
+        client2.stream_remove("/newton/prep")
+        client2.stream_destroy("/newton/prep")
+        self.ok(f"-u {self.url} -U {self.url2} --nometa /newton*")
+        self.contain("Creating destination stream /newton/prep-copy", False)
+        self.contain("Creating destination stream /newton/prep", True)
+        eq_(client1.stream_list(), client2.stream_list())
+        eq_(list(client1.stream_extract("/newton/prep")),
+            list(client2.stream_extract("/newton/prep")))
+        eq_(client2.stream_get_metadata("/newton/prep"), {})
+
+        # fill in test cases
+        self.ok(f"-u {self.url} -U {self.url2} -s 2010 -e 2020 -F /newton*")
+
+    def test_03_decimate(self):
+        self.main = nilmtools.decimate.main
+
+        client = nilmdb.client.Client(url=self.url)
+
+        # basic arguments
+        self.fail(f"")
+
+        # no dest
+        self.fail(f"/newton/prep /newton/prep-decimated-1")
+        self.contain("doesn't exist")
+
+        # wrong dest shape
+        client.stream_create("/newton/prep-decimated-bad", "float32_8")
+        self.fail(f"/newton/prep /newton/prep-decimated-bad")
+        self.contain("wrong number of fields")
+
+        # bad factor
+        self.fail(f"/newton/prep -f 1 /newton/prep-decimated-bad")
+        self.contain("needs to be 2 or more")
+
+        # ok, default factor 4
+        client.stream_create("/newton/prep-decimated-4", "float32_24")
+        self.ok(f"/newton/prep /newton/prep-decimated-4")
+        a = client.stream_count("/newton/prep")
+        b = client.stream_count("/newton/prep-decimated-4")
+        eq_(a // 4, b)
+
+        # factor 10
+        client.stream_create("/newton/prep-decimated-10", "float32_24")
+        self.ok(f"/newton/prep -f 10 /newton/prep-decimated-10")
+        self.contain("Processing")
+        a = client.stream_count("/newton/prep")
+        b = client.stream_count("/newton/prep-decimated-10")
+        eq_(a // 10, b)
+
+        # different factor, same target
+        self.fail(f"/newton/prep -f 16 /newton/prep-decimated-10")
+        self.contain("Metadata in destination stream")
+        self.contain("decimate_factor = 10")
+        self.contain("doesn't match desired data")
+        self.contain("decimate_factor = 16")
+
+        # unless we force it
+        self.ok(f"/newton/prep -f 16 -F /newton/prep-decimated-10")
+        a = client.stream_count("/newton/prep")
+        b = client.stream_count("/newton/prep-decimated-10")
+        # but all data was already converted, so no more
+        eq_(a // 10, b)
+
+        # if we try to decimate an already-decimated stream, the suggested
+        # shape is different
+        self.fail(f"/newton/prep-decimated-4 -f 4 /newton/prep-decimated-16")
+        self.contain("create /newton/prep-decimated-16 float32_24")
+
+        # decimate again
+        client.stream_create("/newton/prep-decimated-16", "float32_24")
+        self.ok(f"/newton/prep-decimated-4 -f 4 /newton/prep-decimated-16")
+        self.contain("Processing")
+
+        # check shape suggestion for different input types
+        for (shape, expected) in (("int32_1", "float64_3"),
+                                  ("uint32_1", "float64_3"),
+                                  ("int64_1", "float64_3"),
+                                  ("uint64_1", "float64_3"),
+                                  ("float32_1", "float32_3"),
+                                  ("float64_1", "float64_3")):
+            client.stream_create(f"/test/{shape}", shape)
+            self.fail(f"/test/{shape} /test/{shape}-decim")
+            self.contain(f"create /test/{shape}-decim {expected}")
+
+    def test_04_decimate_auto(self):
+        self.main = nilmtools.decimate_auto.main
+
+        client = nilmdb.client.Client(url=self.url)
+
+        self.fail(f"")
+
+        self.fail(f"--max -1 asdf")
+        self.contain("bad max")
+
+        self.fail(f"/no/such/stream")
+        self.contain("no stream matched path")
+
+        # normal run
+        self.ok(f"/newton/prep")
+
+        # can't auto decimate a decimated stream
+        self.fail(f"/newton/prep-decimated-16")
+        self.contain("need to pass the base stream instead")
+
+        # decimate prep again, this time much more; also use -F
+        self.ok(f"-m 10 --force-metadata /newton/pr??")
+        self.contain("Level 4096 decimation has 9 rows")
+
+        # decimate the different shapes
+        self.ok(f"/test/*")
+        self.contain("Level 1 decimation has 0 rows")
+
+    def test_05_insert(self):
+        self.main = nilmtools.insert.main
+
+        client = nilmdb.client.Client(url=self.url)
+
+        self.fail(f"")
+        self.ok(f"--help")
+
+        # mutually exclusive arguments
+        self.fail(f"--delta --rate 123 /foo bar")
+        self.fail(f"--live --filename /foo bar")
+
+        # Insert from file
+        client.stream_create("/insert/prep", "float32_8")
+
+        t0 = "tests/data/prep-20120323T1000"
+        t2 = "tests/data/prep-20120323T1002"
+        t4 = "tests/data/prep-20120323T1004"
+        self.ok(f"--file --dry-run --rate 120 /insert/prep {t0} {t2} {t4}")
+        self.contain("Dry run")
+
+        # wrong rate
+        self.fail(f"--file --dry-run --rate 10 /insert/prep {t0} {t2} {t4}")
+        self.contain("Data is coming in too fast")
+
+        # skip forward in time
+        self.ok(f"--file --dry-run --rate 120 /insert/prep {t0} {t4}")
+        self.contain("data timestamp behind by 120")
+        self.contain("Skipping data timestamp forward")
+
+        # skip backwards in time
+        self.fail(f"--file --dry-run --rate 120 /insert/prep {t0} {t2} {t0}")
+        self.contain("data timestamp ahead by 240")
+
+        # skip backwards in time is OK if --skip provided
+        self.ok(f"--skip -f -D -r 120 insert/prep {t0} {t2} {t0} {t4}")
+        self.contain("Skipping the remainder of this file")
+
+        # Now insert for real
+        self.ok(f"--skip --file --rate 120 /insert/prep {t0} {t2} {t4}")
+        self.contain("Done")
+
+        # Overlap
+        self.fail(f"--skip --file --rate 120 /insert/prep {t0}")
+        self.contain("new data overlaps existing data")
+
+        # Not overlap if we change file offset
+        self.ok(f"--skip --file --rate 120 -o 0 /insert/prep {t0}")
+
+        # Data with no timestamp
+        self.fail(f"-f -r 120 /insert/prep tests/data/prep-notime")
+        self.contain("No idea what timestamp to use")
+
+        # Check intervals so far
+        eq_(list(client.stream_intervals("/insert/prep")),
+            [[1332507600000000, 1332507959991668],
+             [1332511200000000, 1332511319991668]])
+
+        # Delta supplied by file
+        self.ok(f"--file --delta -o 0 /insert/prep {t4}-delta")
+        eq_(list(client.stream_intervals("/insert/prep")),
+            [[1332507600000000, 1332507959991668],
+             [1332511200000000, 1332511319991668],
+             [1332511440000000, 1332511499000001]])
+
+        # Now fake live timestamps by using the delta file, and a
+        # fake clock that increments one second per call.
+        def fake_time_now():
+            nonlocal fake_time_base
+            ret = fake_time_base
+            fake_time_base += 1000000
+            return ret
+        real_time_now = nilmtools.insert.time_now
+        nilmtools.insert.time_now = fake_time_now
+
+        # Delta supplied by file.  This data is too fast because delta
+        # contains a 50 sec jump
+        fake_time_base = 1332511560000000
+        self.fail(f"--live --delta -o 0 /insert/prep {t4}-delta")
+        self.contain("Data is coming in too fast")
+        self.contain("data time is Fri, 23 Mar 2012 10:06:55")
+        self.contain("clock time is only Fri, 23 Mar 2012 10:06:06")
+
+        # This data is OK, no jump
+        fake_time_base = 1332511560000000
+        self.ok(f"--live --delta -o 0 /insert/prep {t4}-delta2")
+
+        # This has unparseable delta
+        fake_time_base = 1332511560000000
+        self.fail(f"--live --delta -o 0 /insert/prep {t4}-delta3")
+        self.contain("can't parse delta")
+
+        # Insert some gzipped data, with no timestamp in name
+        bp1 = "tests/data/bpnilm-raw-1.gz"
+        bp2 = "tests/data/bpnilm-raw-2.gz"
+        client.stream_create("/insert/raw", "uint16_6")
+        self.ok(f"--file /insert/raw {bp1} {bp2}")
+
+        # Try truncated data
+        tr = "tests/data/trunc"
+        self.ok(f"--file /insert/raw {tr}1 {tr}2 {tr}3 {tr}4")
+
+        nilmtools.insert.time_now = real_time_now
+
+    def generate_sine_data(self, client, path, data_sec, fs, freq):
+        # generate raw data
+        client.stream_create(path, "uint16_2")
+        with client.stream_insert_context(path) as ctx:
+            for n in range(fs * data_sec):
+                t = n / fs
+                v = math.sin(t * 2 * math.pi * freq)
+                i = 0.3 * math.sin(3*t) + math.sin(t)
+                line = b"%d %d %d\n" % (
+                    (t + 1234567890) * 1e6,
+                    v * 32767 + 32768,
+                    i * 32768 + 32768)
+                ctx.insert(line)
+        if 0:
+            for (s, e) in client.stream_intervals(path):
+                print(Interval(s,e).human_string())
+
+
+    def test_06_sinefit(self):
+        self.main = nilmtools.sinefit.main
+        client = nilmdb.client.Client(url=self.url)
+
+        self.fail(f"")
+        self.ok(f"--help")
+
+        self.generate_sine_data(client, "/sf/raw", 50, 8000, 60)
+
+        client.stream_create("/sf/out-bad", "float32_4")
+        self.fail(f"--column 1 /sf/raw /sf/out-bad")
+        self.contain("wrong number of fields")
+        self.fail(f"--column 1 /sf/raw /sf/out")
+        self.contain("/sf/out doesn't exist")
+
+        # basic run
+        client.stream_create("/sf/out", "float32_3")
+        self.ok(f"--column 1 /sf/raw /sf/out")
+        eq_(client.stream_count("/sf/out"), 3000)
+
+        # parameter errors
+        self.fail(f"--column 0 /sf/raw /sf/out")
+        self.contain("need a column number")
+        self.fail(f"/sf/raw /sf/out")
+        self.contain("need a column number")
+        self.fail(f"-c 1 --frequency 0 /sf/raw /sf/out")
+        self.contain("frequency must be")
+        self.fail(f"-c 1 --min-freq 100 /sf/raw /sf/out")
+        self.contain("invalid min or max frequency")
+        self.fail(f"-c 1 --max-freq 5 /sf/raw /sf/out")
+        self.contain("invalid min or max frequency")
+        self.fail(f"-c 1 --min-amp -1 /sf/raw /sf/out")
+        self.contain("min amplitude must be")
+
+        # trigger some warnings
+        client.stream_create("/sf/out2", "float32_3")
+        self.ok(f"-c 1 -f 500 -e @1234567897000000 /sf/raw /sf/out2")
+        self.contain("outside valid range")
+        self.contain("1000 warnings suppressed")
+        eq_(client.stream_count("/sf/out2"), 0)
+
+        self.ok(f"-c 1 -a 40000 -e @1234567898000000 /sf/raw /sf/out2")
+        self.contain("below minimum threshold")
+
+        # get coverage for "advance = N/2" line near end of sinefit,
+        # where we found a fit but it was after the end of the window,
+        # so we didn't actually mark anything in this window.
+        self.ok(f"-c 1 -f 240 -m 50 -e @1234567898010000 /sf/raw /sf/out2")
+
+    def test_07_median(self):
+        self.main = nilmtools.median.main
+        client = nilmdb.client.Client(url=self.url)
+
+        self.fail(f"")
+        self.ok(f"--help")
+
+        client.stream_create("/median/1", "float32_8")
+        client.stream_create("/median/2", "float32_8")
+        self.fail("/newton/prep /median/0")
+        self.contain("doesn't exist")
+        self.ok("/newton/prep /median/1")
+        self.ok("--difference /newton/prep /median/2")
+
+    def test_08_prep(self):
+        self.main = nilmtools.prep.main
+        client = nilmdb.client.Client(url=self.url)
+
+        self.fail(f"")
+        self.ok(f"--help")
+
+        self.fail(f"-c 2 /sf/raw /sf/out /prep/out")
+        self.contain("/prep/out doesn't exist")
+
+        # basic usage
+        client.stream_create("/prep/out", "float32_8")
+        self.ok(f"-c 2 /sf/raw /sf/out /prep/out")
+        self.contain("processed 100000")
+
+        # test arguments
+        self.fail(f"/sf/raw /sf/out /prep/out")
+        self.contain("need a column number")
+        self.fail(f"-c 0 /sf/raw /sf/out /prep/out")
+        self.contain("need a column number")
+        self.fail(f"-c 2 -n 3 /sf/raw /sf/out /prep/out")
+        self.contain("need 6 columns")
+        self.fail(f"-c 2 -n 0 /sf/raw /sf/out /prep/out")
+        self.contain("number of odd harmonics must be")
+        self.fail(f"-c 2 -N 0 /sf/raw /sf/out /prep/out")
+        self.contain("number of shifted FFTs must be")
+        self.ok(f"-c 2 -r 0 /sf/raw /sf/out /prep/out")
+        self.ok(f"-c 2 -R 0 /sf/raw /sf/out /prep/out")
+        self.fail(f"-c 2 -r 0 -R 0 /sf/raw /sf/out /prep/out")
+        self.fail(f"-c 2 /sf/raw /sf/no-sinefit-data /prep/out")
+        self.contain("sinefit data not found")
+        self.fail(f"-c 2 /sf/raw /prep/out /prep/out")
+        self.contain("sinefit data type is float32_8; expected float32_3")
+
+        # Limit time so only one row gets passed in
+        client.stream_create("/prep/tmp", "float32_8")
+        s = 1234567890000000
+        e = 1234567890000125
+        self.ok(f"-c 2 -s {s} -e {e} /sf/raw /sf/out /prep/tmp")
+
+        # Lower sampling rate on everything, so that the FFT doesn't
+        # return all the harmonics, and prep has to fill with zeros.
+        # Tests the "if N < (nharm * 2):" condition in prep
+        self.generate_sine_data(client, "/sf/raw-low", 5, 100, 60)
+        self.main = nilmtools.sinefit.main
+        client.stream_create("/sf/out-low", "float32_3")
+        self.ok(f"--column 1 /sf/raw-low /sf/out-low")
+        self.main = nilmtools.prep.main
+        client.stream_create("/prep/out-low", "float32_8")
+        self.ok(f"-c 2 /sf/raw-low /sf/out-low /prep/out-low")
+
+        # Test prep with empty sinefit data
+        client.stream_create("/sf/out-empty", "float32_3")
+        with client.stream_insert_context("/sf/out-empty",
+                                          1034567890123456,
+                                          2034567890123456):
+            pass
+        client.stream_create("/prep/out-empty", "float32_8")
+        self.ok(f"-c 2 /sf/raw /sf/out-empty /prep/out-empty")
+        self.contain("warning: no periods found; skipping")
+
+    def generate_trainola_data(self):
+        # Build some fake data for trainola, which is just pulses of varying
+        # length.
+        client = nilmdb.client.Client(url=self.url)
+
+        total_sec = 100
+        fs = 100
+        rg = numpy.random.Generator(numpy.random.MT19937(1234567))
+        path = "/train/data"
+
+        # Just build up some random pulses.  This uses seeded random numbers,
+        # so any changes here will affect the success/failures of tests later.
+        client.stream_create(path, "float32_1")
+        with client.stream_insert_context(path) as ctx:
+            remaining = 0
+            for n in range(fs * total_sec):
+                t = n / fs
+                data = rg.normal(100) / 100 - 1
+                if remaining > 0:
+                    remaining -= 1
+                    data += 1
+                else:
+                    if rg.integers(fs * 10 * total_sec) < fs:
+                        if rg.integers(3) < 2:
+                            remaining = fs*2
+                        else:
+                            remaining = fs/2
+                line = b"%d %f\n" % (t * 1e6, data)
+                ctx.insert(line)
+
+        # To view what was made, try:
+        if 0:
+            subprocess.call(f"nilmtool -u {self.url} extract -s min -e max " +
+                            f"{path} > /tmp/data", shell=True)
+            # then in Octave: a=load("/tmp/data"); plot(a(:,2));
+        if 0:
+            for (s, e) in client.stream_intervals(path):
+                print(Interval(s,e).human_string())
+
+        # Also generate something with more than 100k data points
+        client.stream_create("/train/big", "uint8_1")
+        with client.stream_insert_context("/train/big") as ctx:
+            for n in range(110000):
+                ctx.insert(b"%d 0\n" % n)
+
+    def test_09_trainola(self):
+        self.main = nilmtools.trainola.main
+        client = nilmdb.client.numpyclient.NumpyClient(url=self.url)
+
+        self.fail(f"")
+        self.ok(f"--help")
+        self.ok(f"--version")
+
+        self.generate_trainola_data()
+
+        def get_json(path):
+            with open(path) as f:
+                js = f.read().replace('\n', ' ')
+                return f"'{js}'"
+
+        # pass a dict as argv[0]
+        with assert_raises(KeyError):
+            saved_stdout = sys.stdout
+            try:
+                with open(os.devnull, 'w') as sys.stdout:
+                    nilmtools.trainola.main([{ "url": self.url }])
+            finally:
+                sys.stdout = saved_stdout
+
+        # pass no args and they come from sys.argv
+        saved_argv = sys.argv
+        try:
+            sys.argv = [ "prog", "bad-json," ]
+            with assert_raises(json.decoder.JSONDecodeError):
+                nilmtools.trainola.main()
+        finally:
+            sys.argv = saved_argv
+
+        # catch a bunch of errors based on different json input
+        client.stream_create("/train/matches", "uint8_1")
+        for (num, error) in [ (1, "no columns"),
+                              (2, "duplicated columns"),
+                              (3, "bad column number"),
+                              (4, "source path '/c/d' does not exist"),
+                              (5, "destination path '/a/b' does not exist"),
+                              (6, "missing exemplars"),
+                              (7, "missing exemplars"),
+                              (8, "exemplar stream '/e/f' does not exist"),
+                              (9, "No data in this exemplar"),
+                              (10, "Too few data points"),
+                              (11, "Too many data points"),
+                              (12, "column FOO is not available in source") ]:
+            self.fail(get_json(f"tests/data/trainola-bad{num}.js"))
+            self.contain(error)
+
+        # not enough columns in dest
+        self.fail(get_json("tests/data/trainola1.js"))
+        self.contain("bad destination column number")
+
+        # run normally
+        client.stream_destroy("/train/matches")
+        client.stream_create("/train/matches", "uint8_2")
+        self.ok(get_json("tests/data/trainola1.js"))
+        self.contain("matched 10 exemplars")
+
+        # check actual matches, since we made up the data
+        matches = list(client.stream_extract_numpy("/train/matches"))
+        eq_(matches[0].tolist(), [[34000000, 1, 0],
+                                  [36000000, 0, 1],
+                                  [40800000, 1, 0],
+                                  [42800000, 0, 1],
+                                  [60310000, 1, 0],
+                                  [62310000, 0, 1],
+                                  [69290000, 1, 0],
+                                  [71290000, 0, 1],
+                                  [91210000, 1, 0],
+                                  [93210000, 0, 1]])
+
+        # another run using random noise as an exemplar, to get better coverage
+        client.stream_create("/train/matches2", "uint8_1")
+        self.ok(get_json("tests/data/trainola2.js"))
+
+    def test_10_pipewatch(self):
+        self.main = nilmtools.pipewatch.main
+
+        self.fail(f"")
+        self.ok(f"--help")
+
+        lock = "tests/pipewatch.lock"
+        lk = f"--lock {lock}"
+
+        try:
+            os.unlink(lock)
+        except OSError:
+            pass
+
+        # try locking so pipewatch will exit (with code 0)
+        lockfile = open(lock, "w")
+        nilmdb.utils.lock.exclusive_lock(lockfile)
+        self.ok(f"{lk} true true")
+        self.contain("pipewatch process already running")
+        os.unlink(lock)
+
+        # have pipewatch remove its own lock to trigger error later
+        self.ok(f"{lk} 'rm {lock}' true")
+
+        # various cases to get coverage
+        self.ok(f"{lk} true 'cat >/dev/null'")
+        self.contain("generator returned 0, consumer returned 0")
+        self.fail(f"{lk} false true")
+        self.contain("generator returned 1, consumer returned 0")
+        self.fail(f"{lk} false false")
+        self.contain("generator returned 1, consumer returned 1")
+        self.fail(f"{lk} true false")
+        self.contain("generator returned 0, consumer returned 1")
+        self.fail(f"{lk} 'kill -15 $$' true")
+        self.ok(f"{lk} 'sleep 1 ; echo hi' 'cat >/dev/null'")
+        self.ok(f"{lk} 'echo hi' 'cat >/dev/null'")
+        self.fail(f"{lk} --timeout 0.5 'sleep 10 ; echo hi' 'cat >/dev/null'")
+        self.fail(f"{lk} 'yes' 'head -1 >/dev/null'")
+        self.fail(f"{lk} false 'exec 2>&-; trap \"sleep 10\" 0 15 ; sleep 10'")
+
+    def test_11_cleanup(self):
+        self.main = nilmtools.cleanup.main
+        client = nilmdb.client.Client(url=self.url)
+
+        # This mostly just gets coverage, doesn't carefully verify behavior
+        self.fail(f"")
+        self.ok(f"--help")
+
+        self.fail(f"tests/data/cleanup-bad.cfg")
+        self.contain("unknown units")
+
+        client.stream_create("/empty/foo", "uint16_1")
+        self.ok(f"tests/data/cleanup.cfg")
+        self.contain("'/nonexistent/bar' did not match any existing streams")
+        self.contain("no config for existing stream '/empty/foo'")
+        self.contain("nothing to do (only 0.00 weeks of data present)")
+        self.contain("specify --yes to actually perform")
+
+        self.ok(f"--yes tests/data/cleanup.cfg")
+        self.contain("removing data before")
+        self.contain("removing from /sf/raw")
+
+        self.ok(f"--estimate tests/data/cleanup.cfg")
+        self.contain("Total estimated disk usage")
+        self.contain("MiB")
+        self.contain("GiB")
+
+        self.ok(f"--yes tests/data/cleanup-nodecim.cfg")
+        self.ok(f"--estimate tests/data/cleanup-nodecim.cfg")
+
+    def test_12_misc(self):
+        # Fill in test cases that were missed by earlier code:
+
+        # math.py
+        with assert_raises(ValueError):
+            nilmtools.math.sfit4([1], 5)
+        nilmtools.math.sfit4([1,2], 5)
+
+        # filter.py
+        client = nilmdb.client.numpyclient.NumpyClient(self.url)
+        client.stream_create("/misc/a", "uint8_1")
+        client.stream_create("/misc/b", "uint8_1")
+        with client.stream_insert_context("/misc/a") as ctx:
+            for n in range(10000):
+                ctx.insert(b"%d 0\n" % n)
+        pni = nilmtools.filter.process_numpy_interval
+        src = nilmtools.filter.get_stream_info(client, "/misc/a")
+        extractor = functools.partial(
+            client.stream_extract_numpy, "/misc/a",
+            layout=src.layout, maxrows=1000)
+        inserter = functools.partial(
+            client.stream_insert_numpy_context, "/misc/b")
+        def func1(*args):
+            return 0
+        def func2(*args):
+            return -1
+        def func3(array, interval, args, insert_func, last):
+            if last:
+                return array.shape[0]
+            return 0
+        saved = (sys.stdout, sys.stderr)
+        try:
+            with open(os.devnull, 'w') as sys.stdout:
+                with open(os.devnull, 'w') as sys.stderr:
+                    pni(Interval(0, 10000), extractor, inserter, 100, func1)
+                    with assert_raises(SystemExit):
+                        f = nilmtools.filter.Filter("hello world")
+        finally:
+            (sys.stdout, sys.stderr) = saved
+
+        with assert_raises(Exception):
+            pni(Interval(0, 10000), extractor, inserter, 100, func2)
+        pni(Interval(0, 10000), extractor, inserter, 100000, func3)
+
+        with assert_raises(NotImplementedError):
+            pni(Interval(0, 10000), extractor, inserter, 100000,
+                nilmtools.filter.example_callback_function)
+
+        self.main = nilmtools.filter.main
+        self.fail(f"")
+        self.ok(f"--help")
+
+        self.fail(f"/misc/a /misc/a")
+        self.contain("must be different")
+
+        self.fail(f"--start HELLOWORLD /misc/a /misc/a")
+        self.contain("not enough digits for a timestamp")
+
+        client.stream_create("/misc/c", "uint8_1")
+        self.ok(f"--quiet /misc/a /misc/c")
+        self.contain("Source: /misc/a", False)
+        self.contain("Generic filter: need to handle")
+
+        f = nilmtools.filter.Filter()
+        parser = f.setup_parser()
+        args = f.parse_args(["--quiet", "/misc/a", "/misc/c"])
+        x = f.client_src
+        x = f.client_dest
+        for i in f.intervals():
+            with assert_raises(Exception) as e:
+                x = f.client_src
+            in_("client is in use", str(e.exception))
+            with assert_raises(Exception) as e:
+                x = f.client_dest
+            in_("client is in use", str(e.exception))

tests/testutil/__init__.py

@@ -0,0 +1 @@
+# empty

tests/testutil/helpers.py

@@ -0,0 +1,64 @@
+# Just some helpers for test functions
+
+import io
+import os
+import re
+import sys
+import time
+import shlex
+import shutil
+
+import nilmdb.server
+import nilmdb.utils
+import nilmdb.utils.timestamper
+from nilmdb.utils.printf import printf
+
+def myrepr(x):
+    if isinstance(x, str):
+        return '"' + x + '"'
+    else:
+        return repr(x)
+
+def eq_(a, b):
+    if not a == b:
+        raise AssertionError("%s != %s" % (myrepr(a), myrepr(b)))
+
+def lt_(a, b):
+    if not a < b:
+        raise AssertionError("%s is not less than %s" % (myrepr(a), myrepr(b)))
+
+def in_(a, b):
+    if a not in b:
+        raise AssertionError("%s not in %s" % (myrepr(a), myrepr(b)))
+
+def nin_(a, b):
+    if a in b:
+        raise AssertionError("unexpected %s in %s" % (myrepr(a), myrepr(b)))
+
+def in2_(a1, a2, b):
+    if a1 not in b and a2 not in b:
+        raise AssertionError("(%s or %s) not in %s" % (myrepr(a1), myrepr(a2),
+                                                       myrepr(b)))
+
+def ne_(a, b):
+    if not a != b:
+        raise AssertionError("unexpected %s == %s" % (myrepr(a), myrepr(b)))
+
+def lines_(a, n):
+    l = a.count('\n')
+    if not l == n:
+        if len(a) > 5000:
+            a = a[0:5000] + " ... truncated"
+        raise AssertionError("wanted %d lines, got %d in output: '%s'"
+                             % (n, l, a))
+
+def recursive_unlink(path):
+    try:
+        shutil.rmtree(path)
+    except OSError:
+        pass
+    try:
+        os.unlink(path)
+    except OSError:
+        pass
+