python 事件 响应 钩子 event hooks

# -*- coding: utf-8 -*-
import requests

def get_key_info(response, *args, **kwargs):
"""callback function"""
print response.headers['Content-Type']

def main():
"""
主程序

"""
requests.get('http://www.baidu.com', hooks=dict(response=get_key_info))

main()