python获取文件真实链接的方法,针对于302返回码

import requests url_string="https://******" r = requests.head(url_string, stream=True) print r.headers['Location'] 

url_string="https://******" r = requests.head(url_string, stream=True, allow_redirects=True) # print r.headers['Location'] print r.headers["Content-Length"] 

import requests url_string="https://******" r = requests.get(url_string, stream=True) print r.headers["Content-Length"]