Flask基础介绍

from flask import Flask
app = Flask(__name__)
@app.route("/url")
def handle_url:
    return "Something"

from flask import url_for
url_for()

from flask import redirect
redicrect()

from flask import request
from flask import make_response

// 设置Cookie
response = make_response(url_for(‘index‘))
response.set_cookie(name, json.dumps(dict))
// 获取Cookie
json.loads(request.cookies.get(name))

{{ value }}
分支语句
{% if something %}
...
{% else %}
...
{% endif %}
循环语句
{% for object in objects %}
...
{% endif %}

// 基类: base.html
...
{% block content %}
{% endblock %}
...
// 子类: child.html
{% extends "base.html" %}
{% block content %}
...
{% endblock %}

from flask import flash
// 注意: 使用前需要配置app.secret_key
flash(strings)
*.html
{{ get_flashed_messages()[n] }}

@app.errorhandle(error_number)

from flask import abort
abort(error_number)

$ mkdir app
$ cd app/
$ virtualenv flask
New python executable in /home/user/app/flask/bin/python2
Also creating executable in /home/user/app/flask/bin/python
Installing setuptools, pip, wheel...done.

$ source flask/bin/activate
(flask) $
(flask) $ deactivate