How to use cookies in Python Requests
PythonCookiesPython RequestsPython Problem Overview
I am trying to login to a page and access another link in the page.
payload={'username'=<username>,'password'=<password>}
with session() as s:
r = c.post(<URL>, data=payload)
print r
print r.content
This is giving me a "405 Not Allowed" error. I checked the post method details using chrome developer tools and could see an api (URL/api/auth). I posted to that URL with the payload and it was working and i was getting a response similar to what i could see in the developer.
Unfortunately when trying to 'get' another url after login, i am still getting the content from the login page. Why is the login not sticking? Should i use cookies? I am a newbie, so i don't really know how to work with cookies.
Python Solutions
Solution 1 - Python
You can use a session object. It stores the cookies so you can make requests, and it handles the cookies for you
s = requests.Session()
# all cookies received will be stored in the session object
s.post('http://www...',data=payload)
s.get('http://www...')
Docs: https://requests.readthedocs.io/en/master/user/advanced/#session-objects
You can also save the cookie data to an external file, and then reload them to keep session persistent without having to login every time you run the script:
https://stackoverflow.com/questions/13030095/how-to-save-requests-python-cookies-to-a-file
Solution 2 - Python
From the documentation:
-
get cookie from response
url = 'http://example.com/some/cookie/setting/url' r = requests.get(url) r.cookies
{'example_cookie_name': 'example_cookie_value'}
-
give cookie back to server on subsequent request
url = 'http://httpbin.org/cookies' cookies = {'cookies_are': 'working'} r = requests.get(url, cookies=cookies)`
Solution 3 - Python
Summary (@Freek Wiekmeijer, @gtalarico) other's answer:
Logic of Login
- Many resource(pages, api) need
authentication
, then can access, otherwise405 Not Allowed
- Common
authentication
=grant access
method are:cookie
auth header
Basic xxx
Authorization xxx
cookie
in requests
to auth
How use - first get/generate cookie
- send cookie for following request
- manual set
cookie
inheaders
- auto process
cookie
byrequests
'ssession
to auto manage cookiesresponse.cookies
to manually set cookies
requests
's session
auto manage cookies
use curSession = requests.Session()
# all cookies received will be stored in the session object
payload={'username': "yourName",'password': "yourPassword"}
curSession.post(firstUrl, data=payload)
# internally return your expected cookies, can use for following auth
# internally use previously generated cookies, can access the resources
curSession.get(secondUrl)
curSession.get(thirdUrl)
requests
's response.cookies
manually control payload={'username': "yourName",'password': "yourPassword"}
resp1 = requests.post(firstUrl, data=payload)
# manually pass previously returned cookies into following request
resp2 = requests.get(secondUrl, cookies= resp1.cookies)
resp3 = requests.get(thirdUrl, cookies= resp2.cookies)