复制代码 代码如下:

import threading

from time import sleep

def test_func(id):

for i in range(0,5):

sleep(1)

print('thread %d is running %d' % (id,i))

threads = []

for i in range(0,3):

t = threading.Thread(target=test_func, args=(i,))

threads.append(t)

for t in threads:

t.start()

for t in threads:

t.join()

从输出结果可以看到，3个线程是交替的执行的