死锁现象

import threading
import time


lockA = threading.Lock()
lockB = threading.Lock()
class Mythread(threading.Thread):
    def __init__(self,name):
        super(Mythread,self).__init__()
        self.name = name
    def doA(self):
        lockA.acquire()
        print(self.name, "gotlockA", time.ctime())
        time.sleep(3)
        lockB.acquire()
        print(self.name, "gotlockB", time.ctime())
        lockB.release()
        lockA.release()
    def doB(self):
        lockB.acquire()
        print(self.name, "gotlockA", time.ctime())
        time.sleep(3)
        lockA.acquire()
        print(self.name, "gotlockB", time.ctime())
        lockA.release()
        lockB.release()
    def run(self):
        self.doA()
        self.doB()
if __name__ == '__main__':
    t1 = Mythread("thread-1")
    t2 = Mythread("thread-2")
    t1.start()
    t2.start()


解决办法：
threading.Lock() 改成threading.RLock