How to modify cookies in Requests

Question

I couldn't find any documentations regarding cookies modification in the official website, i.e. no api doc for requests.cookies.RequestsCookieJar.

For example,

session = requests.Session()
a = session.head('http://www.google.co.uk')

session.cookies

<[Cookie(version=0, name='NID', value='67=CXdvwjj9sjd-13Y0VyRQyUs8PxXaxyMhiGrrozXP7RWSjf-5alV4D17ORcfnZNYLAmlHXSVlHuS5LcuE4-v6vnzRQS-Gt72hgbGye0apoBoW5KJeVXA2o2E0gE-8jIeY', port=None, port_specified=False, domain='.google.co.uk', domain_specified=True, domain_initial_dot=True, path='/', path_specified=True, secure=False, expires=1424443599, discard=False, comment=None, comment_url=None, rest={'HttpOnly': None}, rfc2109=False), Cookie(version=0, name='PREF', value='ID=41c5d5cac7d22262:FF=0:TM=1408632399:LM=1408632399:S=wTfY_LkkZnSsBxoL', port=None, port_specified=False, domain='.google.co.uk', domain_specified=True, domain_initial_dot=True, path='/', path_specified=True, secure=False, expires=1471704399, discard=False, comment=None, comment_url=None, rest={}, rfc2109=False)]>

Now I want to change value of 'NID'

If I do session.cookies['NID'] = 'abc', it would ended up with duplicated keys like the following:

<[Cookie(version=0, name='NID', value='abc', port=None, port_specified=False, domain='', domain_specified=False, domain_initial_dot=False, path='/', path_specified=True, secure=False, expires=None, discard=True, comment=None, comment_url=None, rest={'HttpOnly': None}, rfc2109=False), Cookie(version=0, name='NID', value='67=CXdvwjj9sjd-13Y0VyRQyUs8PxXaxyMhiGrrozXP7RWSjf-5alV4D17ORcfnZNYLAmlHXSVlHuS5LcuE4-v6vnzRQS-Gt72hgbGye0apoBoW5KJeVXA2o2E0gE-8jIeY', port=None, port_specified=False, domain='.google.co.uk', domain_specified=True, domain_initial_dot=True, path='/', path_specified=True, secure=False, expires=1424443599, discard=False, comment=None, comment_url=None, rest={'HttpOnly': None}, rfc2109=False), Cookie(version=0, name='PREF', value='ID=41c5d5cac7d22262:FF=0:TM=1408632399:LM=1408632399:S=wTfY_LkkZnSsBxoL', port=None, port_specified=False, domain='.google.co.uk', domain_specified=True, domain_initial_dot=True, path='/', path_specified=True, secure=False, expires=1471704399, discard=False, comment=None, comment_url=None, rest={}, rfc2109=False)]>

My current approach is to do session.cookies['NID'] = None first, this removes the key/value, and then session.cookies['NID'] = 'abc' This sometimes works, but it completely ignores the cookies attributes.

What is a proper way of doing it?

Answer 1

For me worked:

for cookie in response.cookies:
    if cookie.name == 'NID':
        cookie.value = 'abc'
        break