code: def locate_config(self):
          ''' Locate config file '''
          for f in self.__potential:
              f = FileHelper.abspath(f)
              if os.path.isfile(f):
                  return f
          return Nonf locate_config(self):
          ''' Locate config file '''
          for f in self.__potential:
              f = FileHelper.abspath(f)
              if os.path.isfile(f):
                  return f
          return None
docs: Locate config file