问Python中是否有控制多线程最大值的机制？

EN

threadLimiter = threading.BoundedSemaphore(maximumNumberOfThreads)

class YourThread(threading.Thread):

    def run(self):
        threadLimiter.acquire()
        try:
            <your code here>
        finally:
            threadLimiter.release()

#adapted example from docs
with concurrent.futures.ThreadPoolExecutor(max_workers=3) as executor:
    future_results = [executor.submit(my_func, *args) for _ in range(100000)]
    for result in concurrent.futures.as_completed(future_results):
        #do something with each result