@staticmethod
  def _FromSafePathParamName(safe_parameter):
    assert safe_parameter.startswith('_')
    safe_parameter_as_base32 = safe_parameter[1:]

    padding_length = - len(safe_parameter_as_base32) % 8
    padding = '=' * padding_length
    return base64.b32decode(safe_parameter_as_base32 + padding)
Takes a safe regex group name and converts it back to the original value.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/dev_appserver_apiserver.py/ApiConfigManager._FromSafePathParamName