Flask Session Expire

main.py

#-*- coding: utf-8 -*-
from flask import Flask, session, render_template_string

app = Flask(__name__)
app.config.update(
    DEBUG = True,
    SECRET_KEY = 'suckmycock!',
    PERMANENT_SESSION_LIFETIME = 10)

@app.route('/session')
def show_session():
    return render_template_string(u''' 
            {% if 'name' in session %}
                name: {{ session.name }}
                <hr/>
                <div id="hint">session 将在 <strong id="time">{{ config.PERMANENT_SESSION_LIFETIME }}</strong> 秒后过期
                <script type="text/javascript">
                var timer = window.setInterval(function() {
                    var time_node = document.getElementById('time');
                    var time = parseInt(time_node.innerHTML);
                    if (time > 1) {
                        time_node.innerHTML = time - 1;
                    } else {
                        window.clearInterval(timer);
                        document.getElementById('hint').innerHTML = 
                            'session 已过期，<a href="javascript:history.go()">刷新</a>以查看。';
                    }
                }, 1000);
                </script>
            {% else %}
                session 已经过期, 无法读取 <code>name</code> 属性，<a href="/">重新生成</a>.
            {% endif %}''')

@app.route('/')
def make_session():
    session.permanent = True
    session['name'] = 'greatgargoyle'
    return u'''已在 session 中创建 <code>name</code> 属性，<a href="/session">查看</a>'''

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

Interesting secret key!