Fixing py lint errors

Bug: webrtc:9548
Change-Id: I0daf8dc06fdaac1637c32994ef6ad542ed52202a
Reviewed-on: https://webrtc-review.googlesource.com/90045
Reviewed-by: Oleh Prypin <oprypin@webrtc.org>
Reviewed-by: Niklas Enbom <niklas.enbom@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24068}

modules/audio_coding/audio_network_adaptor/parse_ana_dump.py

@@ -66,9 +66,9 @@ def ParseAnaDump(dump_file_to_parse):
     first_time_stamp = None
     while True:
       event = GetNextMessageFromFile(file_to_parse)
-      if event == None:
+      if event is None:
         break
-      if first_time_stamp == None:
+      if first_time_stamp is None:
         first_time_stamp = event.timestamp
       if event.type == debug_dump_pb2.Event.ENCODER_RUNTIME_CONFIG:
         for decision in event.encoder_runtime_config.DESCRIPTOR.fields:
@@ -110,7 +110,7 @@ def main():
       action='append')
 
   options = parser.parse_args()[0]
-  if options.dump_file_to_parse == None:
+  if options.dump_file_to_parse is None:
     print "No dump file to parse is set.\n"
     parser.print_help()
     exit()

modules/audio_processing/test/py_quality_assessment/quality_assessment/input_signal_creator.py

@@ -61,7 +61,7 @@ class InputSignalCreator(object):
       AudioSegment instance.
     """
     assert 0 < frequency <= 24000
-    assert 0 < duration
+    assert duration > 0
     template = signal_processing.SignalProcessingUtils.GenerateSilence(duration)
     return signal_processing.SignalProcessingUtils.GeneratePureTone(
         template, frequency)

modules/remote_bitrate_estimator/test/plot_dynamics.py

@@ -41,7 +41,7 @@ def ParsePlotLine(line):
   # The variable name can contain any non-whitespace character except "#:@"
   match = re.match(r'([^\s#:@]+)(?:#\d)?:(\d+)@(\S+)', annotated_var)
 
-  if match == None:
+  if match is None:
     raise ParsePlotLineException("Could not parse variable name, ssrc and \
                                  algorithm name", annotated_var)
   var_name = match.group(1)

presubmit_test.py

@@ -237,7 +237,7 @@ class CheckNoMixingSourcesTest(unittest.TestCase):
     self.assertTrue('bar.c' in str(errors[0]))
 
   def _AssertNumberOfErrorsWithSources(self, number_of_errors, sources):
-    assert 3 == len(sources), 'This function accepts a list of 3 source files'
+    assert len(sources) == 3, 'This function accepts a list of 3 source files'
     self._GenerateBuildFile(textwrap.dedent("""
       rtc_static_library("bar_foo") {
         sources = [

pylintrc

@@ -20,6 +20,7 @@ disable=
   I0010,
   I0011,
   W0232,
+  C0413,
   bad-continuation,
   broad-except,
   duplicate-code,

tools_webrtc/android/build_aar.py

@@ -161,9 +161,9 @@ def Build(build_dir, arch, use_goma, extra_gn_args, extra_gn_switches,
   gn_args_str = '--args=' + ' '.join([
       k + '=' + _EncodeForGN(v) for k, v in gn_args.items()] + extra_gn_args)
 
-  gn_args = ['gen', output_directory, gn_args_str]
-  gn_args.extend(extra_gn_switches)
-  _RunGN(gn_args)
+  gn_args_list = ['gen', output_directory, gn_args_str]
+  gn_args_list.extend(extra_gn_switches)
+  _RunGN(gn_args_list)
 
   ninja_args = TARGETS[:]
   if use_goma:

tools_webrtc/cpu/cpu_mon.py

@@ -61,7 +61,7 @@ def main():
   snapshots = []
   while True:
     snapshot = GrabCpuSamples(sample_count)
-    if snapshot == None:
+    if snapshot is None:
       break
     snapshots.append(snapshot)
 

tools_webrtc/libs/generate_licenses_test.py

@@ -16,8 +16,8 @@ SRC = os.path.abspath(os.path.join(
                       os.path.dirname((__file__)), os.pardir, os.pardir))
 sys.path.append(os.path.join(SRC, 'third_party', 'pymock'))
 
-import mock
 import unittest
+import mock
 
 from generate_licenses import LicenseBuilder
 

video/full_stack_tests_plot.py

@@ -196,9 +196,9 @@ def AverageOverCycle(values, length):
 
   total = [0.0] * length
   count = [0] * length
-  for k in range(len(values)):
-    if values[k] is not None:
-      total[k % length] += values[k]
+  for k, val in enumerate(values):
+    if val is not None:
+      total[k % length] += val
       count[k % length] += 1
 
   result = [0.0] * length
@@ -386,11 +386,11 @@ def PlotConfigsFromArgs(args):
   #   argparse.ArgumentParser, modified to remember the order of arguments.
   #   Then we traverse the argument list and fill the PlotConfig.
   args = itertools.groupby(args, lambda x: x in ["-n", "--next"])
-  args = list(list(group) for match, group in args if not match)
+  prep_args = list(list(group) for match, group in args if not match)
 
   parser = GetParser()
   plot_configs = []
-  for index, raw_args in enumerate(args):
+  for index, raw_args in enumerate(prep_args):
     graph_args = parser.parse_args(raw_args).ordered_args
     plot_configs.append(_PlotConfigFromArgs(graph_args, index))
   return plot_configs