<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def reset():
 """ Reset the worker state associated with any signals that this worker has received so far. If the worker calls receive() on a source next, it will get all the signals generated by that source starting with index = 1. """

    if hasattr(ray.worker.global_worker, "signal_counters"):
        ray.worker.global_worker.signal_counters = defaultdict(lambda: b"0")