Fix flake8 warnings

nilmdb/cmdline/cmdline.py

@@ -66,7 +66,7 @@ class Complete():
         layouts = []
         for i in range(1, 10):
             layouts.extend([(t + "_" + str(i)) for t in types])
-        return (l for l in layouts if l.startswith(prefix))
+        return (lay for lay in layouts if lay.startswith(prefix))
 
     def meta_key(self, prefix, parsed_args, **kwargs):
         return (kv.split('=')[0] for kv

nilmdb/server/serverutil.py

@@ -189,7 +189,7 @@ def cherrypy_patch_exit():
         if args.exc_type == CherryPyExit or args.exc_type == SystemExit:
             return
         sys.excepthook(args.exc_type, args.exc_value,
-                       args.exc_traceback) # pragma: no cover
+                       args.exc_traceback)  # pragma: no cover
     threading.excepthook = hook
 
 

nilmdb/utils/timestamper.py

@@ -28,7 +28,7 @@ class Timestamper():
                 continue
             # For some reason, coverage on python 3.8 reports that
             # we never hit this break, even though we definitely do.
-            break # pragma: no cover
+            break  # pragma: no cover
         try:
             return next(self.ts_iter) + line
         except StopIteration: