How do I set the `SameSite` attribute of HTTP cookies in python?

Question

Support for Same-Site cookies has landed in Firefox 60, but as of Python 3.6 the standard library cookie module doesn\'t support the SameSite attribute.

Answer 1

Support for the SameSite attribute was added on April 7, 2018 in Pull Request #6413.

It's possible to monkey-patch older versions to support the attribute:

try:
    from http.cookies import Morsel
except ImportError:
    from Cookie import Morsel

Morsel._reserved[str('samesite')] = str('SameSite')

Or using six:

from six.moves.http_cookies import Morsel

Morsel._reserved[str('samesite')] = str('SameSite')