def hincrbyfloat(self, name, key, amount=<NUM_LIT:1.0>):
with self.pipe as pipe:<EOL><INDENT>return pipe.hincrbyfloat(self.redis_key(name),<EOL>self.memberparse.encode(key),<EOL>amount)<EOL><DEDENT>
Increment the value of the field.

:param name: str     the name of the redis key
:param key: the name of the emement in the hash
:param amount: float
:return: Future()