我不确定这可能是跨平台的，但使用信号和警报可能是看待这个问题的好方法.只需稍加努力，您就可以使其完全通用，并可在任何情况下使用.

I'm not sure how cross-platform this might be, but using signals and alarm might be a good way of looking at this. With a little work you could make this completely generic as well and usable in any situation.

http://docs.python.org/library/signal.html

所以你的代码看起来像这样.

So your code is going to look something like this.

import signal

def signal_handler(signum, frame):
    raise Exception("Timed out!")

signal.signal(signal.SIGALRM, signal_handler)
signal.alarm(10)   # Ten seconds
try:
    long_function_call()
except Exception, msg:
    print "Timed out!"