def GET(self):web.header('Content-Type', 'text/html; charset=UTF-8')form = LoginForm()return render.index(form)def POST(self):web.header('Content-Type', 'text/html; charset=UTF-8')form = LoginForm(None, web.input())if form.validate():flag = self.do_login(form.username.data, form.password.data)if not flag:return render.index(form)raise web.seeother('/done?true')return render.index(form)