Handle KeyboardInterrupt consistently in python scripts

my_reviews.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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 356 matching lines @@
   else:
     print_reviews(
         options.reviewer,
         options.begin,
         options.end,
         options.instance_url)
   return 0
 
 
 if __name__ == '__main__':
-  sys.exit(main())
+  try:
+    sys.exit(main())
+  except KeyboardInterrupt:
+    sys.stderr.write('interrupted\n')
+    sys.exit(1)