<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def maybe_put_task(self):
 """Enqueue the next task, if there are any waiting."""

        try:
            task = next(self.tasks)
        except StopIteration:
            pass
        else:
            log.debug('Putting %s on queue', task)
            self.task_queue.put(task)