# -*- coding:utf-8 -*-
# -*- coding:utf-8 -*-
# 继承式调用
import threading
import time
class MyThread(threading.Thread):
    def __init__(self, num,sleep_time):
        super(MyThread,self).__init__()
        #threading.Thread.__init__(self)
        self.num = num
        self.sleep_time = sleep_time
    def run(self):  # 定义每个线程要运行的函数(必须是run)
        print("running on number:%s" % self.num)
        time.sleep(self.sleep_time)
        print("task done.....",self.num)
t1 = MyThread("线程1",2)
t2 = MyThread("线程2",5)
t1.start()
t2.start()
t1.join() #等待  # 串行
t2.join() #等待  # 串行
print("主线程")
#不加join的时候、主线程和子线程并行，没有依赖关系
#当加上join的时候，主线程依赖子线程执行完毕之后再执行