# -*- coding:utf-8 -*-
# 继承式调用
import threading
import time
class MyThread(threading.Thread):
    def __init__(self, num):
        super(MyThread,self).__init__()
        #threading.Thread.__init__(self)
        self.num = num
    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(3)
        print("done")
t1 = MyThread(1)
t2 = MyThread(2)
t1.start()
t2.start()