python多线程交替打印abc以及线程池进程池的相关概念

import threading import sys import time def showa():     while True:         lockc.acquire()   #获取对方的锁，释放自己的锁         print('a',end='')         sys.stdout.flush()   #释放缓冲区         locka.release()         time.sleep(0.2) def showb():     while True:         locka.acquire()         print('b',end='')         sys.stdout.flush()          lockb.release()         time.sleep(0.2) def showc():     while True:         lockb.acquire()         print('c',end='')         sys.stdout.flush()         lockc.release()         time.sleep(0.2) if __name__=='__main__':     locka=threading.Lock()  #定义3个互斥锁     lockb=threading.Lock()     lockc=threading.Lock()       t1=threading.Thread(target=showa)   #定义3个线程     t2=threading.Thread(target=showb)     t3=threading.Thread(target=showc)       locka.acquire()   #先锁住a,b锁，保证先打印a     lockb.acquire()       t1.start()     t2.start()     t3.start()   执行结果：abcabcabcabcabcabcabcabcabcabcbabcabcabcabcabcabc.......

关于线程池，进程池参考如下链接：http://c.biancheng.net/view/2627.html

来源：博客园

作者：shengguorui

链接：https://www.cnblogs.com/shengguorui/p/11419426.html