Silence pylint on Mac OSX 10.6

my_reviews.py

 #!/usr/bin/env python
 # Copyright (c) 2011 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.
 
 """Get rietveld stats about the review you done, or forgot to do.
 
 Example:
   - my_reviews.py -r me@chromium.org -Q  for stats for last quarter.
 """
@@ skipping 284 matching lines @@
       help='Filter issues created before the date')
   parser.add_option(
       '-Q', '--last_quarter', action='store_true',
       help='Use last quarter\'s dates, e.g. %s to %s' % (
         begin, end))
   parser.add_option(
       '-i', '--instance_url', metavar='<host>',
       default='http://codereview.chromium.org',
       help='Host to use, default is %default')
   # Remove description formatting
-  parser.format_description = lambda x: parser.description
+  parser.format_description = (
+      lambda _: parser.description)  # pylint: disable=E1101
   options, args = parser.parse_args()
   if args:
     parser.error('Args unsupported')
   if not options.reviewer:
     parser.error('$EMAIL_ADDRESS is not set, please use -r')
   print >> sys.stderr, 'Searching for reviews by %s' % options.reviewer
   if options.last_quarter:
     options.begin = begin
     options.end = end
     print >> sys.stderr, 'Using range %s to %s' % (
         options.begin, options.end)
   if options.count:
     print_count(
         options.reviewer,
         options.begin,
         options.end,
         options.instance_url)
   else:
     print_reviews(
         options.reviewer,
         options.begin,
         options.end,
         options.instance_url)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())