import threading


# 必须要使用condition的例子

# class XiaoAi(threading.Thread):
#     def __init__(self, lock):
#         super().__init__(name="小爱")
#         self.lock = lock
#
#     def run(self):
#         self.lock.acquire()
#         print("{} : 在 ".format(self.name))
#         self.lock.release()
#
#         self.lock.acquire()
#         print("{} : 好啊 ".format(self.name))
#         self.lock.release()
#
# class TianMao(threading.Thread):
#     def __init__(self, lock):
#         super().__init__(name="天猫精灵")
#         self.lock = lock
#
#     def run(self):
#
#         self.lock.acquire()
#         print("{} : 小爱同学 ".format(self.name))
#         self.lock.release()
#
#         self.lock.acquire()
#         print("{} : 我们来对古诗吧 ".format(self.name))
#         self.lock.release()

class XiaoAi(threading.Thread):

    def __init__(self, cond):

        super().__init__(name="小爱")

        self.cond = cond

    def run(self):

        with self.cond:

            self.cond.wait()

            print("{} : 在 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 好啊 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 君住长江尾 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 共饮长江水 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 此恨何时已 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 定不负相思意 ".format(self.name))

            self.cond.notify()

class TianMao(threading.Thread):

    def __init__(self, cond):

        super().__init__(name="天猫精灵")

        self.cond = cond

    def run(self):

        with self.cond:

            print("{} : 小爱同学 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 我们来对古诗吧 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 我住长江头 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 日日思君不见君 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 此水几时休 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

            print("{} : 只愿君心似我心 ".format(self.name))

            self.cond.notify()

            self.cond.wait()

if __name__ == "__main__":

    cond = threading.Condition()

    xiaoai = XiaoAi(cond)

    tianmao = TianMao(cond)

    #启动顺序很重要

    #在调用with cond之后才能调用wait或者notify方法

    xiaoai.start()

    tianmao.start()