How can I get the named parameters from a URL using Flask?

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')

The URL parameters are available in request.args, which is an ImmutableMultiDict that has a get method, with optional parameters for default value (default) and type (type) - which is a callable that converts the input value to the desired format. (See the documentation of the method for more details.)

from flask import request@app.route('/my-route')def my_route():  page = request.args.get('page', default = 1, type = int)  filter = request.args.get('filter', default = '*', type = str)

Examples with the code above:

/my-route?page=34               -> page: 34  filter: '*'/my-route                       -> page:  1  filter: '*'/my-route?page=10&filter=test   -> page: 10  filter: 'test'/my-route?page=10&filter=10     -> page: 10  filter: '10'/my-route?page=*&filter=*       -> page:  1  filter: '*'

You can also use brackets <> on the URL of the view definition and this input will go into your view function arguments

@app.route('/<name>')def my_view_func(name):    return name