Fix importing breakpad from an interactive python prompt.

breakpad.py

 # Copyright (c) 2009 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.
 
 """Breakpad for Python.
 
 Sends a notification when a process stops on an exception.
 
 It is only enabled when all these conditions are met:
   1. hostname finishes with '.google.com' or 'chromium.org'
@@ skipping 116 matching lines @@
 def Register():
   """Registers the callback at exit. Calling it multiple times is no-op."""
   global _REGISTERED
   if _REGISTERED:
     return
   _REGISTERED = True
   atexit.register(CheckForException)
 
 
 # Skip unit tests and we don't want anything from non-googler.
-if (not 'test' in sys.modules['__main__'].__file__ and
+if (not 'test' in getattr(sys.modules['__main__'], '__file__', '') and
     not 'NO_BREAKPAD' in os.environ and
     (_HOST_NAME.endswith('.google.com') or
      _HOST_NAME.endswith('.chromium.org'))):
   Register()
 
 # Uncomment this line if you want to test it out.
 #Register()