<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def submit(self, __fun, *args, **kwargs):
 """ Creates a new future and enqueues it. Returns the future. """


    future = Future().bind(__fun, *args, **kwargs)
    self.enqueue(future)
    return future