code: def set(self, name, value, ex=None, px=None, nx=False, xx=False):
          
          with self.pipe as pipe:
              value = self.valueparse.encode(value)
              return pipe.set(self.redis_key(name), value,
                              ex=ex, px=px, nx=nx, xx=xx)
docs: Set the value at key ``name`` to ``value``
  
          ``ex`` sets an expire flag on key ``name`` for ``ex`` seconds.
  
          ``px`` sets an expire flag on key ``name`` for ``px`` milliseconds.
  
          ``nx`` if set to True, set the value at key ``name`` to ``value`` if it
          does not already exist.
  
          ``xx`` if set to True, set the value at key ``name`` to ``value`` if it
          already exists.
  
          :return: Future()