new_contents: #!/usr/bin/env python2.5
  #
  # Copyright 2011 the Melange authors.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  """Module containing the exceptions from the AccessChecker class.
  """
  
  __authors__ = [
      '"Sverre Rabbelier" <sverre@rabbelier.nl>',
  ]
  
  
  class Error(Exception):
    """Error class for the access_exception module.
    """
  
    status = 500
  
  
  class LoginRequest(Error):
    """Use needs to be logged in to view this page.
    """
    pass
  
  
  class RedirectRequest(Error):
    """User should be redirected to specific url.
    """
  
    def __init__(self, url):
      self.url = url
  
  
  class AccessViolation(Error):
    """An access requirement was not met.
    """
  
    status = 403
  
  
  class NotFound(Error):
    """Item Not Found.
    """
  
    status = 404
  
  
  def BadRequest(Error):
    """Bad Request
    """
  
    status = 400
  
subject: Add Exceptions module