Taking a string that was a member of the zset, extract the value and pk

        Parameters
        ----------
        string: str
            The member extracted from the sorted set

        Returns
        -------
        tuple
            Tuple with the value and the pk, extracted from the string

def _extract_value_from_storage(self, string):
        """Taking a string that was a member of the zset, extract the value and pk

        Parameters
        ----------
        string: str
            The member extracted from the sorted set

        Returns
        -------
        tuple
            Tuple with the value and the pk, extracted from the string

        """
        parts = string.split(self.separator)
        pk = parts.pop()
        return self.separator.join(parts), pk