Set cookie

flask-cookie.py

from flask import Flask, make_response, request, redirect, url_for, escape
import base64

app = Flask(__name__)
app.secret_key = 'A0Zr98j/3yX R~XHH!jN]LWX/,?RT'

@app.route('/')
def index():
    print request.cookies
    if "address" in request.cookies:
        address = escape(request.cookies.get("address"))
        return "Your bitcoin address is %s.<br><a href=\"%s\">Logout</a>"\
            % (base64.b64encode(address), url_for('logout'))
    return redirect(url_for('login'))


@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        resp = make_response(redirect(url_for('index')))
        resp.set_cookie("address", request.form['address'], max_age=60*60*24*30)
        return resp
    return '''
        <form action="" method="post">
            <p><input type=text name=address>
            <p><input type=submit value=Submit>
        </form>
    '''

@app.route('/logout')
def logout():
    resp = make_response(redirect(url_for('index')))
    resp.set_cookie("address", expires=0)

    return resp


if __name__ == '__main__':
    app.run(port=8888, debug=True)