Lint bisect-related modules; obey pylint.

scripts/slave/recipe_modules/auto_bisect/api.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """API for the bisect recipe module.
 
 This API is meant to enable the bisect recipe to bisect any chromium-supported
 platform for any test that can be run via buildbot, perf or otherwise.
 """
 
@@ skipping 37 matching lines @@
     """
     self.override_poll_interval = bisect_config_dict.get('poll_sleep')
     revision_class = self._get_revision_class(bisect_config_dict['test_type'])
     return bisector.Bisector(self, bisect_config_dict, revision_class,
                              init_revisions=not dummy_mode)
 
   def _get_revision_class(self, test_type):
     """Gets the particular subclass of Revision needed for the test type."""
     if test_type == 'perf':
       return perf_revision_state.PerfRevisionState
-    else: #pragma: no cover
+    else:  # pragma: no cover
       raise NotImplementedError()
 
   def gsutil_file_exists(self, path):
     """Returns True if a file exists at the given GS path."""
     try:
       self.m.gsutil(['ls', path])
-    except self.m.step.StepFailure: #pragma: no cover
+    except self.m.step.StepFailure:  # pragma: no cover
       return False
     return True
 
   def query_revision_info(self, revision, git_checkout_dir=None):
     """Gathers information on a particular revision, such as author's name,
     email, subject, and date.
 
     Args:
       revision (str): Revision you want to gather information on; a git
         commit hash.
@@ skipping 16 matching lines @@
     separator = 'S3P4R4T0R'
     formats = separator.join(['%aN', '%aE', '%s', '%cD', '%b'])
     targets = ['author', 'email', 'subject', 'date', 'body']
     command_parts = ['log', '--format=%s' % formats, '-1', revision]
 
     step_result = self.m.git(*command_parts,
                              name='Reading culprit cl information.',
                              cwd=git_checkout_dir,
                              stdout=self.m.raw_io.output())
     return dict(zip(targets, step_result.stdout.split(separator)))