code: def path(self, value=None):
          
          if value is not None:
              if not value.startswith('/'):
                  value = '/' + value
              encoded_value = unicode_quote(value)
              return URL._mutate(self, path=encoded_value)
          return self._tuple.path
docs: Return or set the path
  
          :param string value: the new path to use
          :returns: string or new :class:`URL` instance