相关疑难解决方法(0)

如何在多进程python程序中捕获Ctrl + C并优雅地退出所有进程,我需要解决方案在unix和windows上工作.我尝试过以下方法:

import multiprocessing
import time
import signal
import sys

jobs = []

def worker():
    signal.signal(signal.SIGINT, signal_handler)
    while(True):
        time.sleep(1.1234)
        print "Working..."

def signal_handler(signal, frame):
    print 'You pressed Ctrl+C!'
    # for p in jobs:
    #     p.terminate()
    sys.exit(0)

if __name__ == "__main__":
    for i in range(50):
        p = multiprocessing.Process(target=worker)
        jobs.append(p)
        p.start()

它有点工作,但我不认为这是正确的解决方案.

编辑: 这可能与此重复

今天,当我注意到一些奇怪的东西时,我必须检查我的脚本如何在Windows命令提示符^[1]上运行.我正在研究类似的东西,但这足以证明这个问题.这是代码.

def bing():
    try:
        raw_input()
    except KeyboardInterrupt:
        print 'This is what actually happened here!'

try:                     # pardon me for those weird strings
    bing()               # as it's consistent with everything in the chat room (see below)
    print 'Yoo hoo...'
except KeyboardInterrupt:
    print 'Nothing happens here too!'

这是情况.当脚本运行时,它等待输入,并且用户应该按Ctrl+ C来引发一个KeyboardInterrupt(应该)被except内部块捕获的内容bing().所以,这应该是实际的输出.而且,当我在我的Ubuntu终端和IDLE(在Windows和Ubuntu上)运行它时会发生这种情况.

This is what actually happened here!
Yoo hoo...

但是,这不会在Windows命令提示符下按预期方式进行.我宁愿得到一个奇怪的输出.

This is what actually happened here! Nothing happens here too!

它看起来像是KeyboardInterrupt在整个程序中传播并最终终止它. …