#!/usr/bin/env /usr/bin/python3.4
# -*- coding: utf-8 -*-
import sys
import threading
import signal
from datetime import datetime
import time


class MyObject(object):
  def __init__(self):
    self.data = {}
    self.data['a'] = 'aaa'
    self.data['b'] = 'bbb'
    self.data['c'] = 'ccc'


def test():
  while True:
    print(datetime.now())
    time.sleep(2)

# 信號處理函數(shù)
def signal_handler(signum, frame):
  try:
    # 動態(tài)加載模塊
    sys.path.append("/tmp/my_modules")

    # 導入bar模塊
    bar = __import__('bar')

    # 重新加載模塊，為的是可以隨時重新加載模塊
    reload(bar)

    # 調(diào)用動態(tài)加載模塊的方法
    bar.execute()
  except BaseException as e:
    print(e)


my_object = MyObject()

if __name__ == "__main__":
  try:
    signal.signal(signal.SIGQUIT, signal_handler)

    threading.Thread(target=test).start()

    while True:
      time.sleep(60)
  except KeyboardInterrupt:
    sys.exit(1)

#!/usr/bin/env /usr/bin/python3.4
# -*- coding: utf-8 -*-
import foo


def execute():
  # 打印foo模塊中的對象
  print "my_object: %s " % foo.my_object.data

$ python foo.py

$ kill -3 <pid>