Python如何实现多线程，多线程概述

import threading
import time

def run():
    print("执行了任务！")
    time.sleep(5)

t1=threading.Thread(target=run,args=("t1",))
t2=threading.Thread(target=run,args=("t1",))
t3=threading.Thread(target=run,args=("t1",))

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