templates/index.html

Hello World!

templates/user.html

Hello, {{ name }}!

渲染模板：

from flask import Flask,render_template

@app.route('/')

def index():

return render_template('index.html')

@app.route('/user/')

def user(name):

return render_template('user.html', name=name)

A value from a dictionary: {{ mydict['key'] }}.

A value from a list: {{ mylist[3] }}.

A value from a list, with a variable index: {{ mylist[myintvar] }}.

A value from an object's method: {{ myobj.somemethod() }}.

Hello, {{ name|capitalize }}

name|capitalize

变量过滤：capitalize

safe 不转义

lower

upper

title

trim

striptags

控制语句

{% if user %}

Hello, {{ user }}!

{% else %}

Hello, Stranger!

{% endif %}

{% for comment in comments %}

{{ comment }}

{% endfor %}

使用宏

{% macro render_comment(comment) %}

{{ comment }}

{% endmacro %}

{% for comment in comments %}

{{ render_comment(comment) }}

{% endfor %}

包含

{% include 'common.html' %}

block占位符

{% block head %}

{% block title %}{% endblock %} - My Application

{% endblock %}

{% block body %}

{% endblock %}

extends

{% extends "base.html" %}

{% block title %}Index{% endblock %}

{% block head %}

{{ super() }}

{% endblock %}

{% block body %}

Hello, World!

{% endblock %}