python主动结束线程源码要怎么写，python源码,import sysim

python主动结束线程源码要怎么写，python源码,import sysim

import sysimport signalimport timeimport threadingdef signalHandler(sig,id):    sys.exit()signal.signal(signal.SIGINT, signalHandler)signal.signal(signal.SIGQUIT, signalHandler)signal.signal(signal.SIGTERM, signalHandler)signal.signal(signal.SIGHUP, signalHandler)class Test(threading.Thread):    def run(self):        while True:            print 'xxxxxxxxxxx'            time.sleep(1)def main():    t = Test()    t.start() if __name__ == '__main__':      main()

全局变量怎么用呢? 我加上全局变量不起作用,应该怎么写呢?

import sysimport signalimport timeimport threadingNEEDEXIT = Falsedef signalHandler(sig,id):    global NEEDEXIT    NEEDEXIT = True    sys.exit()signal.signal(signal.SIGINT, signalHandler)signal.signal(signal.SIGQUIT, signalHandler)signal.signal(signal.SIGTERM, signalHandler)signal.signal(signal.SIGHUP, signalHandler)class Test(threading.Thread):    def run(self):        global NEEDEXIT        while not NEEDEXIT:            print 'xxxxxxxxxxx'            time.sleep(1)def main():    t = Test()    t.start() if __name__ == '__main__':      main()

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