#!/usr/bin/env python3.3
# -*- coding: utf-8 -*-

import time

def interrupt_decorator(handler):
    def decorator(fun):
        def wrapper(*args, **kwargs):
            try:
                fun(*args, **kwargs)
            except KeyboardInterrupt:
                handler()
        return wrapper
    return decorator

def fun():
    try:
        print("running...")
        time.sleep(30)
        print("finished")
    except KeyboardInterrupt:
        print("exiting...")

@interrupt_decorator(lambda: print("exiting"))
def fun2():
    print("running...")
    time.sleep(30)
    print("finished")

fun2()