requests模块-session

session对象能够跨http请求保持某些参数

import requests

s = requests.Session()

#设置cookies
s.get("http://httpbin.org/cookies/set/sessioncookie/123456789")

#发送请求，查看当前请求的cookies
r = s.get("http://httpbin.org/cookies")
print(r.text)

运行结果

{
  "cookies": {
    "sessioncookie": "123456789"
  }
}

单独的请求携带临时参数

import requests

s = requests.Session()
s.headers.update({'key1': 'value1'})
r1 = s.get('http://httpbin.org/headers', headers={'key2': 'value2'})
print(r1.text)

r2 = s.get('http://httpbin.org/headers')
print(r2.text)

运行结果

{
  "headers": {
    "Accept": "*/*", 
    "Accept-Encoding": "gzip, deflate", 
    "Host": "httpbin.org", 
    "Key1": "value1", 
    "Key2": "value2", 
    "User-Agent": "python-requests/2.31.0", 
    "X-Amzn-Trace-Id": "Root=1-6583e501-43e109f1010acd8e2e053fd1"
  }
}

{
  "headers": {
    "Accept": "*/*", 
    "Accept-Encoding": "gzip, deflate", 
    "Host": "httpbin.org", 
    "Key1": "value1", 
    "User-Agent": "python-requests/2.31.0", 
    "X-Amzn-Trace-Id": "Root=1-6583e502-7d6ff35a61dee8f9048151ec"
  }
}