# -*- coding:utf-8 -*-from flask import Flask#创建一个flask应用对象app = Flask(__name__)app.debug = True#使用 route()装饰器告诉flask哪个url触发哪个函数@app.route(‘/‘)def hello_world():    return ‘Index page‘#route()装饰器绑定了一个函数hello()到一个URL "/hello"@app.route(‘/hello‘)def hello():    return ‘Hello world‘if __name__ == ‘__main__‘:    app.run()

Static Files

Dynamic web applications also need static files. That’s usually where the CSS and JavaScript files are coming from. Ideally your web server is configured to serve them for you, but during development Flask can do that as well. Just create a folder called static in your package or next to your module and it will be available at /static on the application.

To generate URLs for static files, use the special ‘static‘ endpoint name:

url_for(‘static‘, filename=‘style.css‘)

The file has to be stored on the filesystem as static/style.css.

# 这里我们接受一个username变量，http://127.0.0.1:5000/user/xxx@app.route(‘/user/<username>‘)def show_user_profile(username):    #显示指定用户的信息    return ‘User %s‘ % username# http://127.0.0.1:5000/post/xx(为int的数字)@app.route(‘/post/<int:post_id>‘)def show_post(post_id):    #显示指定id的文章内容    return ‘Post %d‘ % post_id

版本一#route()装饰器绑定了另外一个URL@app.route(‘/hello‘)def hello():    return ‘Hello world‘#当我们访问http://127.0.0.1:5000/hello/会出错#版本二#route()装饰器绑定了另外一个URL@app.route(‘/hello/‘)def hello():    return ‘Hello world‘#当我们访问http://127.0.0.1:5000/hello 会转到 http://127.0.0.1:5000/hello/

from flask import Flask, requestapp = Flask(__name__)app.debug=True@app.route(‘/login‘, methods=[‘GET‘, ‘POST‘])def login():    if request.method == ‘GET‘:        return ‘GET‘    else:        return ‘POST‘