Python Flask how to get parameters from a URL?

In Flask, How do I extract parameters from a URL? How can I extract named parameters from a URL using flask and python?

When the user accesses this URL running on my flask app, I want the web service to be able to handle the parameters specified after the question mark:

    http://10.1.1.1:5000/login?username=alex&password=pw1

    #I just want to be able to manipulate the parameters
    @app.route('/login', methods=['GET', 'POST'])
    def login():
        username = request.form['username']
        print(username)
        password = request.form['password']
        print(password)

Use request.args to get parsed contents of query string:

    from flask import request

    @app.route(...)
    def login():
        username = request.args.get('username')
        password = request.args.get('password')

From: stackoverflow.com/q/24892035

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