设计两个自定义线程，名字分别是自己姓名的缩写和自己的学号 让他们和主线程公平竞争、用继承Thread类和实施Runnable 接口分别实现一遍。

继承Thread类实现：

import threading

class MYThread(threading.Thread):
    def __init__(self, name):
        threading.Thread.__init__(self)
        self.name = name

    def run(self):
        for i in range(5):
            print("This is thread %s, running %d" % (self.name, i))

if __name__ == "__main__":
    t1 = MYThread("ZJL")
    t2 = MYThread("20210000000000")
    t1.start()
    t2.start()
    t1.join()
    t2.join()
    print("All threads finished")

实现Runnable接口：

import threading

class MYRunnable(threading.Thread):
    def __init__(self, name):
        threading.Thread.__init__(self)
        self.name = name

    def run(self):
        for i in range(5):
            print("This is thread %s, running %d" % (self.name, i))

if __name__ == "__main__":
    t1 = threading.Thread(target=MYRunnable("ZJL").run)
    t2 = threading.Thread(target=MYRunnable("20210000000000").run)
    t1.start()
    t2.start()
    t1.join()
    t2.join()
    print("All threads finished")

注：在实现Runnable接口时，需要通过`target`参数传入要执行的函数。