How to set cookie in Python Flask?

Question

In this way, I want to set my cookie. But it fails to set.

@app.route('/')
def index():
    res = flask.make_response()
    res.set_cookie("name", value="I am cookie")

When I print res it shows <Response 0 bytes [200 OK] But not set cookie

Answer 1

You have to return the response after setting the cookie.

@app.route('/')
def index():
    resp = make_response(render_template(...))
    resp.set_cookie('somecookiename', 'I am cookie')
    return resp 

This way a cookie will be generated in your browser, but you can get this cookie in the next request.

@app.route('/get-cookie/')
def get_cookie():
    username = request.cookies.get('somecookiename')