【Python学习之旅】---多线程回顾

#多线程回顾
import threading
import time
def run(name):
    print(name,"线程运行了！")
    time.sleep(5)
#创建两个线程对象
t1=threading.Thread(target=run,args=("t1",))
t2=threading.Thread(target=run,args=("t2",))
#启动线程
t1.start()
t2.start()
#等待两个子线程运行完毕之后再执行主线程
t1.join()
t2.join()
print("主线程运行")


#创建线程类
class Mythread(threading.Thread):
    def __init__(self,name):
        threading.Thread.__init__(self)
        self.name = name

    def run(self):
        print("开始线程",self.name)
        print("线程执行中--1")
        time.sleep(1)
        print("线程执行中---2")
        time.sleep(1)
        print("结束线程",self.name)
#创建线程
t1=Mythread("t1")
t2=Mythread("t2")
t3=Mythread("t3")

t1.start()
t2.start()
t3.start()

t1.join()
t2.join()
t3.join()

print("执行完毕")