线程之互斥锁

from threading import Thread, Lock
import time
n = 100
def task():
    global n
    mutex.acquire()    #互斥锁枷锁
    temp = n
    time.sleep(0.0001)
    n = temp - 1
    mutex.release()  #互斥锁解锁
if __name__ == '__main__':
    mutex = Lock()
    t_l = list()
    for i in range(100):
        t = Thread(target=task)
        t_l.append(t)
        t.start()
    for t in t_l:
        t.join()
    print('主', n)