线程锁的使用

import threading
import time
globals_num = 0
lock = threading.RLock()
def func():
    lock.acquire()#获得锁
    global globals_num
    globals_num += 1
    time.sleep(1)
    print(globals_num)
    lock.release()#释放锁

for i in range(10):
    t = threading.Thread(target=func)
    t.start()