详解python中自定义超时异常的几种方法

# coding=utf-8
import threading
import time


def myFunc():
  time.sleep(4)
  print("myFunc执行了")


if __name__ == '__main__':
  t = threading.Thread(target=myFunc)
  t.setDaemon(True)
  t.start()

  t.join(2)
  print("it's over")

# coding=utf-8
import threading
import time


def myFunc():
  time.sleep(1)
  print("myFunc执行了")


if __name__ == '__main__':
  t = threading.Thread(target=myFunc)
  t.setDaemon(True)
  t.start()

  t.join(2)
  print("it's over")

import signal
import time

# Define signal handler function
def myHandler(signum, frame):
  exit("TimeoutError")

def test_fun():
  # time.sleep(3)
  int("afsdf")
  a = 2 + 3
  return a

if __name__ == '__main__':
  try:
    signal.signal(signal.SIGALRM, myHandler)
    signal.alarm(2)
    test = test_fun()
    print(test)
    signal.alarm(0)
  except Exception as ret:
    print("msg:", ret)

import threading
import sys
import time


class Dispacher(threading.Thread):
  def __init__(self, fun, args):
    threading.Thread.__init__(self)
    self.setDaemon(True)
    self.result = None
    self.error = None
    self.fun = fun
    self.args = args

    self.start()

  def run(self):
    try:
      self.result = self.fun(self.args)
    except:
      self.error = sys.exc_info()


def test_fun(i):
  # time.sleep(4)
  a = i*i
  # b 　　　
　　return a
def main_fun():
  c = Dispacher(test_fun, 2)
  c.join(2)

  if c.isAlive():
    return "TimeOutError"
  elif c.error:
    return c.error[1]
  t = c.result
  return t

if __name__ == '__main__':
  fun = main_fun()
  print(fun)