Gets @count random members from the set
            @count: #int number of members to return

            -> @count set members

def rand(self, count=1):
        """ Gets @count random members from the set
            @count: #int number of members to return

            -> @count set members
        """
        result = self._client.srandmember(self.key_prefix, count)
        return set(map(self._loads, result))