Flask Hello World

1. 最简版本

from flask import Flask

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

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

http://127.0.0.1:5000/

http://127.0.0.1:5000/user/Brown

2. 使用模板引擎

<h1>Hello World!</h1>

<h1>Hello, {{ name }}!</h1>

from flask import Flask, render_template
from flask_bootstrap import Bootstrap
app = Flask(__name__)
bootstrap = Bootstrap(app)

@app.route('/')
def index():
return render_template('index.html')

@app.route('/user/<name>')
def user(name):
return render_template('user.html', name=name)

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