Cleanup pylint errors

buildbot/buildbot_run.py

 #!/usr/bin/env python
 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 """Argument-less script to select what to run on the buildbots."""
 
 
 import filecmp
@@ skipping 214 matching lines @@
   elif sys.platform == 'darwin':
     retcode += GypTestFormat('ninja')
     retcode += GypTestFormat('xcode')
     retcode += GypTestFormat('make')
   elif sys.platform == 'win32':
     retcode += GypTestFormat('ninja')
     if os.environ['BUILDBOT_BUILDERNAME'] == 'gyp-win64':
       retcode += GypTestFormat('msvs-ninja-2013', format='msvs-ninja',
                                msvs_version='2013',
                                tests=[
-                                   'test\generator-output\gyptest-actions.py',
-                                   'test\generator-output\gyptest-relocate.py',
-                                   'test\generator-output\gyptest-rules.py'])
+                                  r'test\generator-output\gyptest-actions.py',
+                                  r'test\generator-output\gyptest-relocate.py',
+                                  r'test\generator-output\gyptest-rules.py'])
       retcode += GypTestFormat('msvs-2013', format='msvs', msvs_version='2013')
   else:
     raise Exception('Unknown platform')
   if retcode:
     # TODO(bradnelson): once the annotator supports a postscript (section for
     #     after the build proper that could be used for cumulative failures),
     #     use that instead of this. This isolates the final return value so
     #     that it isn't misattributed to the last stage.
     print '@@@BUILD_STEP failures@@@'
     sys.exit(retcode)
 
 
 if __name__ == '__main__':
   GypBuild()