RLock 解决死锁

import threading
import time

lock =threading.RLock()


class Mythread(threading.Thread):
    def __init__(self,name):
        super(Mythread,self).__init__()
        self.name = name
    def doA(self):
        lock.acquire()
        print(self.name, "gotlockA", time.ctime())
        time.sleep(3)
        lock.acquire()
        print(self.name, "gotlockB", time.ctime())
        lock.release()
        lock.release()

    def doB(self):
        lock.acquire()
        print(self.name, "gotlockA", time.ctime())
        time.sleep(3)
        lock.acquire()
        print(self.name, "gotlockB", time.ctime())
        lock.release()
        lock.release()
    def run(self):

        self.doA()
        self.doB()

if __name__ == '__main__':
    t1 = Mythread("thread-1")
    t2 = Mythread("thread-2")
    t1.start()
    t2.start()