调试一个用session来认证用户的程序 大概是这个样子 基本上可以当作webpy session认证的示例程序了

#!/usr/bin/env python
#coding=utf-8
import web
import timeurls = ('/', 'index','/xml', 'pushxml','/login', 'login','/logout', 'logout',
)
render = web.template.render('templates/')
web.config.debug = False
app = web.application(urls, locals())
session = web.session.Session(app, web.session.DiskStore('sessions'))      class index():def GET(self):try:if session.logged_in == True:return '<h1>You are logged in</h1><a href="/logout">Logout</a>'except AttributeError:passreturn '<h1>You are not logged in.</h1><a href="/login">Login now</a>'def authorize(func):def logged(*args,**dic):if session.logged_in==True:func(*args,**dic)else:raise web.seeother('/login')return loggedclass pushxml():# @authorizedef GET(self):try:if session.logged_in == True:web.header('Content-Type', 'text/xml')i = web.input(data=None)return render.response(i.data)except AttributeError:passclass login():def GET(self):try:session.logged_in = Falseexcept AttributeError:passreturn """<form action=/login method=POST><table id="login"><tr><td>User: </td><td><input type=text name='user'></td></tr><tr><td>Password: </td><td><input type="password" name=passwd></td></tr><tr><td></td><td><input type=submit value=LOGIN></td></tr></table></form>"""def POST(self):login_data = web.input()if login_data.user == 'a' and login_data.passwd == 'a':session.logged_in = Trueprint "posted"print sessionraise web.seeother('/')class logout():def GET(self):try:session.logged_in = Falsesession.kill()except AttributeError:passraise web.seeother('/')if __name__ == '__main__':app.run()

开始的时候为了方便web.config.debug = True（这是默认值） session总是不能保存 经过相当长时间的纠结发现错误竟然出在这里

如上 关掉debug模式session可以正常保存了 究竟失身么原因我也搞不清楚了 今天才看到 http://webpy.org/cookbook/sessions

sessions doesn’t work in debug mode because it interfere with reloading. see session_with_reloader for more details.

FUCK web.py！！！