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pythonでタイムアウトを簡単に実装したい

Pythonでタイムアウトが実装されていないライブラリでタイムアウトを使いたい時とかに使えそうなライブラリ

timeout-decorator
https://github.com/pnpnpn/timeout-decorator

サンプル

test_timeout.py
import time
import timeout_decorator


def very_long_function():
    for i in range(100):
        print i
        time.sleep(1)


@timeout_decorator.timeout(5)
def test():
    very_long_function()


if __name__ == '__main__':
    try:
        test()
    except:
        print "test timed out :("
    else:
        print "test finished successfully :)"

実行結果

$ python test_timeoput.py
0
1
2
3
4
test timed out :(
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38
Help us understand the problem. What are the problem?