def setbit(self, name, offset, value):
with self.pipe as pipe:<EOL><INDENT>return pipe.setbit(self.redis_key(name), offset, value)<EOL><DEDENT>
Flag the ``offset`` in the key as ``value``. Returns a boolean
indicating the previous value of ``offset``.

:param name: str     the name of the redis key
:param  offset: int
:param value:
:return: Future()