Check for a cookie with Python Flask

问题

I would like to get a cookie (e.g. country) with this Flask call.

data = request.cookies.get("country")

How can I tell if the cookie exists?

回答1:

request.cookies is a dict, so:

if 'country' in request.cookies:
    # do something
else:
    # do something else

回答2:

request.cookies.get('my_cookie')

should have worked. If it didn't work, you may not have access to the request object when you call this line.

Try importing flask at the top

import flask

then call

cookie = flask.request.cookies.get('my_cookie')

If the cookies exists, it will get assigned to cookie and if not then cookie will equal None

来源：https://stackoverflow.com/questions/13531149/check-for-a-cookie-with-python-flask