CODEWITHSUNDEEP
pythoncookiespython-requests
user1474157
user1474157

Reputation: 1583

How can I use cookies in Python Requests?

I am trying to log in to a page and access another link in the page.

I get a "405 Not Allowed" error from this attempt:

payload={'username'=<username>,'password'=<password>}
with session() as s:
    r = c.post(<URL>, data=payload)
    print(r)
    print(r.content)

I checked the post method details using Chrome developer tools and found a URL that appeard to be an API endpoint. I posted to that URL with the payload and it seemed to work; I got a response similar to what I could see in the developer.

Unfortunately, when trying to 'get' another URL after logging in, I am still getting the content from the login page. Why is the login not sticking? Should I use cookies? How?

Upvotes: 143

Views: 419497

Answers (5)

Terhanko
Terhanko

Reputation: 11

Unfortunately, the requests does not allow cookies to be passed in the headers, so this method does not work. Сookies should be passed as a separate argument r = requests.get(url, cookies=cookies)

Upvotes: 1

crifan
crifan

Reputation: 14328

Summary (@Freek Wiekmeijer, @gtalarico) other's answer:

Logic of Login

  • Many resource(pages, api) need authentication, then can access, otherwise 401=Unauthorized
  • Common authentication=grant access method are:
    • cookie
    • auth header
      • Basic xxx
      • Authorization xxx

How use cookie in requests to auth

  1. first get/generate cookie
  2. send cookie for following request
  • manual set cookie in headers
  • auto process cookie by requests's
    • session to auto manage cookies
    • response.cookies to manually set cookies

use requests's session auto manage cookies

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)

manually control requests's response.cookies

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)

Upvotes: 18

Matan Dobrushin
Matan Dobrushin

Reputation: 195

As others noted, Here is an example of how to add cookies as string variable to the headers parameter -

headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) ...",
    "cookie": "_fbp=fb.1.1654447470850.2143140577; _ga=GA1.2.1...",
}
response = requests.get(url, headers=headers)

Upvotes: 6

Freek Wiekmeijer
Freek Wiekmeijer

Reputation: 4940

From the documentation:

  1. get cookie from response

     url = 'http://example.com/some/cookie/setting/url'
 r = requests.get(url)
 r.cookies

    {'example_cookie_name': 'example_cookie_value'}

  2. give cookie back to server on subsequent request

     url = 'http://httpbin.org/cookies'
 cookies = {'cookies_are': 'working'}
 r = requests.get(url, cookies=cookies)`

Upvotes: 111

gtalarico
gtalarico

Reputation: 4689

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:

How to save requests (python) cookies to a file?

Upvotes: 176

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