Python 核心编程笔记四

Python 2017-08

这里简要记录 Python核心编程 读书笔记 整段代码 可以直接运行

CODE-多线程同步-Thread

# -*- coding:gb18030 -*-
# 线程同步 Thread
import thread
from time import ctime, sleep
loops = [4, 2]
def loop(loopName, sleepTime, locker):
    print 'Loop', loopName, 'begin at: ', ctime()
    sleep(sleepTime)
    print 'Loop', loopName, 'end at: ', ctime()
    locker.release()
def main():
    print 'Loop begin at: ', ctime()
    lockers = []
    loopNames = range(len(loops))
    for i in loopNames:
        locker = thread.allocate_lock()
        locker.acquire()
        lockers.append(locker)
    for i in loopNames:
        thread.start_new_thread(loop, (i, loops[i], lockers[i]))
        sleep(loops[i])
    for i in loopNames:
        while lockers[i].locked():
            pass
    print 'Loop end at: ', ctime()
if __name__ == '__main__':
    main()

RESULT

C:\Python27\python.exe H:/workspace/python-hw/hw-5.py
Loop begin at:  Wed Aug 09 18:37:37 2017
Loop 0 begin at:  Wed Aug 09 18:37:37 2017
Loop 0 end at:  Wed Aug 09 18:37:41 2017
Loop 1 begin at:  Wed Aug 09 18:37:41 2017
Loop 1 end at:  Wed Aug 09 18:37:43 2017
Loop end at:  Wed Aug 09 18:37:43 2017
Process finished with exit code 0