# -*- coding: utf-8 -*- """ @author:XuMing（[email protected]) @description: """ import signal import time def set_timeout(num,callback): def wrap(func): def handle(signum, frame): # 收到信号 SIGALRM 后的回调函数，第一个参数是信号的数字，第二个参数是the interrupted stack frame. raise RuntimeError def to_do(*args,**kwargs): try: signal.signal(signal.SIGALRM, handle) # 设置信号和回调函数 signal.alarm(num) # 设置 num 秒的闹钟 print('start alarm signal.') r = func(*args,**kwargs) print('close alarm signal.') signal.alarm(0) # 关闭闹钟 return r except RuntimeError as e: callback() return to_do return wrap def after_timeout(): # 超时后的处理函数 print("do something after timeout.") raise RuntimeError @set_timeout(2,after_timeout) # 限时 2 秒超时 def connect(): # 要执行的函数 time.sleep(2.4) # 函数执行时间，写大于2的值，可测试超时 return "完成" class Demo: @set_timeout(2,after_timeout) def conn(self): time.sleep(3) return "ok" if __name__ == '__main__': try: a = connect() print(a) except Exception as e: a = 'err' print(a) b = Demo() try: c = b.conn() print(c) except RuntimeError as e: print('run time err.')