06 死锁现象

import time
from threading import Thread,Lock,RLock

def f1(locA,locB):
    locA.acquire()
    print('f1>>1号抢到了A锁')
    time.sleep(1)
    locB.acquire()
    print('f1>>1号抢到了B锁')
    locB.release()

    locA.release()
def f2(locA,locB):
    locB.acquire()

    print('f2>>2号抢到了B锁')

    locA.acquire()
    time.sleep(1)
    print('f2>>2号抢到了A锁')
    locA.release()

    locB.release()
if __name__ == '__main__':
    locA = Lock()
    locB = Lock()
    t1 = Thread(target=f1,args=(locA,locB))
    t2 = Thread(target=f2,args=(locA,locB))
    t1.start()
    t2.start()