python请求requests通过session自动管理cookie维持会话状态实践

import requests 

 
session = requests.session() 

print("会话初始cookie：",dict(session.cookies)) 

 
get_url = "https://postman-echo.com/get" 

res = session.get(url=get_url) 

 
print("响应头中set-cookie：",res.headers.get("set-cookie")) 

print("会话现有cookie：",dict(session.cookies)) 

会话初始cookie： {}

响应头中set-cookie： sails.sid=s%3ALo1-iQfueg8z1DhR_SX3KxwWA85cYN65.asZ1elFlT9g54uj%2FHkHpaZFkk0rBaCFDtRrA9anWzY4; Path=/; HttpOnly

会话现有cookie： {'sails.sid': 's%3ALo1-iQfueg8z1DhR_SX3KxwWA85cYN65.asZ1elFlT9g54uj%2FHkHpaZFkk0rBaCFDtRrA9anWzY4'}

import requests 

 
session = requests.session() 

print("会话初始cookie：",dict(session.cookies)) 

 
# 直接通过key设置cookie，但不支持设置cookie的 path、domain 等值 

session.cookies["cka"]="111a" 

session.cookies["ckb"]="111b" 

 
get_url = "https://postman-echo.com/get" 

res = session.get(url=get_url) 

 
print("本次请求使用的cookie：",res.request.headers.get("Cookie")) 

print("会话现有cookie：",dict(session.cookies)) 

import requests 

 
session = requests.session() 

print("会话初始cookie：",dict(session.cookies)) 

 
# 通过set方法设置cookie，且支持设置path、domain等值 

session.cookies.set("ck2","222",path="/",domain="postman-echo.com") 

 
get_url = "https://postman-echo.com/get" 

res = session.get(url=get_url) 

 
print("本次请求使用的cookie：",res.request.headers.get("Cookie")) 

print("会话现有cookie：",session.cookies)