from flask import Flask
from flask import request

app = Flask(__name__)


@app.route('/')
def index():
    return '<h1>Hello World!</h1>'

@app.route('/user/<name>')
def user(name):
    return '<h1>Hello, %s !</h1>' %name

@app.route('/users/<int:id>')
def users(id):
    return '<h1>Your ID is : %d !</h1>' %id

@app.route('/info/')
def info():
    user_agent = request.headers.get('User-Agent')
    return '<p>Your browser is %s</p>' % user_agent

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

from flask import make_response
@app.route('/cookie/')
def cookie_test():
    response = make_response('<h1>This document carries a cookie!</h1>')
    response.set_cookie('year', '2017')
    return response

from flask import redirect
@app.route('/r/')
def redirect():
    return redirect('http://www.hython.com')

from flask import abort
@app.route('/user/<id>')
def get_user(id):
    user = load_user(id)
    if not user:
        abort(404)
    return '<h1>Hello, %s</h1>' % user.name