from django.contrib.auth.backends import ModelBackend
 
  
class ExceptionBackend(ModelBackend):
    """
    This authentication backend raises an exception on authentication
    for testing purposes.
    """
    def authenticate(self, username=None, password=None):
        raise Exception

@@ -51,12 +51,9 @@
 end%0A
- %0A  
+%0A
 %0Acla

Remove erroneous whitespace