requests库之处理响应

response对象：

http状态码

利用response把流存储成图片或者文件

一个下载图片的实例

import requests

def download_pic():
    #headers = {'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.109 Safari/537.36'}
    url = "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1502704492717&di=8fa0fd715e093c769cd55ec3043d7c2d&imgtype=0&src=http%3A%2F%2Fimg.zcool.cn%2Fcommunity%2F01578458056c9ea84a0d304f7fe50f.jpg"
    response = requests.get(url,stream=True)
    from contextlib import closing
    with closing(requests.get(url,stream=True)) as response:
        with open('demo.jpg','wb') as fd:
            for chunk in response.iter_content(128):
                fd.write(chunk)

    print(response.status_code)
    print(response.headers)
    #print(response.content)

download_pic()

事件钩子：事件驱动型开发，基于回调。

import requests


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

def main():
    requests.get('https://www.baidu.com',hooks=dict(response=get_key_info))

main()