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上次回家已经是去年春节了，时隔一年，翻看之前的照片，似乎除了季节，也没什么变化

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2022

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# -*- coding: utf-8 -*-
# @File: demo.py
# @Author: Gu Youda
# @Date: 2021/12/20
# @Desc:


import signal
import time
import traceback


def timeout_handler(signum, frame):
    print(signum)
    print(frame)
    print("timeout")
    raise Exception("timeout")


def timeout1(fun):
    def wapper(*args, **kwagrs):
        signal.signal(signal.SIGALRM, timeout_handler)
        signal.alarm(-1)
        return fun(*args, **kwagrs)

    return wapper


def timeout(time_s=0):
    def wrapper(fun):
        def _wrapper(*args, **kwagrs):
            signal.signal(signal.SIGALRM, timeout_handler)
            signal.alarm(time_s)
            return fun(*args, **kwagrs)

        return _wrapper

    return wrapper


@timeout(0)
def test1(name):
    print("test1 start")
    print(name)
    time.sleep(2)
    print("test1 end")
    return "test1"


@timeout(2)
def test2():
    print("test2 start")
    time.sleep(3)
    print("test2 end")
    return "test2"


@timeout(4)
def test3():
    print("test3 start")
    time.sleep(4)
    print("test3 end")
    return "test4"


def test4():
    try:
        signal.signal(signal.SIGALRM, timeout_handler)
        signal.alarm(3)
        print("test4 start")
        time.sleep(4)
        print("test4 end")
        signal.alarm(0)
    except Exception:
        print(traceback.format_exc())


if __name__ == '__main__':
    print(test1("aaaa"))
    print(test2())
    print(test3())
    test4()