python多线程的实现方式

import threading

def tstart(arg):

    print(f"{arg}running" )

if __name__ == '__main__':

    t1 = threading.Thread(target=tstart, args=('This is thread 1',))

    t2 = threading.Thread(target=tstart, args=('This is thread 2',))

    t1.start()

    t2.start()

    print("This is main function")

import threading

import time

# 重写一个类，继承于threading.Thread

class MyThread(threading.Thread):

    def __init__(self, jobName):

        super(MyThread, self).__init__()

        self.jobName = jobName

    # 重写run方法， 实现多线程， 因为start方法执行时， 调用的是run方法;

    # run方法里面编写的内容就是你要执行的任务；

    def run(self):

        print("这是一个需要执行的任务%s。。。。。" %(self.jobName))

        print("当前线程的个数:", threading.active_count() )

        time.sleep(1)

        print("当前线程的信息:", threading.current_thread())

if __name__ == '__main__':

    t1 = MyThread("name1")

    t2 = MyThread("name2")

    t1.start()

    t2.start()

    t1.join()

    t2.join()

    print("程序执行结束.....")