import cherrypy

class Main:
    def index(self):
        return """
                <form action="login" method="post">
                    Benutzername: <input type="text" name="username">
                    <br>
                    Passwort: <input type="text" name="password">
                    <br>
                    <input type="submit" value="Absenden">
                    <input type="reset" value="Reset">
                </form>
               """
    index.exposed = True
        
    def login(self, username=None, password=None):
        if username != None or password != None:
            cherrypy.session['username'] = username
            cherrypy.session['password'] = password
        else:
            username = cherrypy.session.get('username')
            password = cherrypy.session.get('password')
        return """
                Benutzername: %s
                <br>
                Passwort: %s
               """ % (username, password)
    login.exposed = True
               
cherrypy.root = Main()
cherrypy.config.update({'sessionFilter.on': True})
cherrypy.server.start()