python 多线程 —— threading.Threading()

多任务可以由多进程完成，也可以由一个进程内的多线程完成。

import time
import threading


def loop():
    print('thread %s is running...' % threading.current_thread().name)
    n = 0
    while n < 5:
        n = n + 1
        print('thread %s >>> %s' % (threading.current_thread().name, n))
        time.sleep(1)
    print('thread %s ended.' % threading.current_thread().name)

if __name__ == '__main__':
    print('thread %s is running...' % threading.current_thread().name)
    # t = threading.Thread(target=loop, name='LoopThread')
    t = threading.Thread(target=loop)
    t.start()
    t.join()
    print('thread %s ended.' % threading.current_thread().name)

thread MainThread is running...
thread Thread-1 is running...
thread Thread-1 >>> 1
thread Thread-1 >>> 2
thread Thread-1 >>> 3
thread Thread-1 >>> 4
thread Thread-1 >>> 5
thread Thread-1 ended.
thread MainThread ended.

Process finished with exit code 0

写上 join() 的话，爸爸就会等着儿子，否则爸爸就自己跑掉~(≧▽≦)/~啦啦啦