code: def customdata(self, lookup, default=None):
      
      try:
        if lookup in EFConfig.CUSTOM_DATA:
          return EFConfig.CUSTOM_DATA[lookup]
        else:
          return default
      except AttributeError:
        return default
docs: Args:
        lookup: the custom data file
        default: the optional value to return if lookup failed; returns None if not set
      Returns:
        The custom data returned from the file 'lookup' or default/None if no match found