login_form = form.Form(
    form.Textbox("username", size=10, description="Username"),
    form.Password("password", size=10, description="Password"),
    form.Button("Login", html="Login", type="submit"),
    validators = [
        form.Validator("Username and password did not match.",
                       lambda i: i.username == 'admin' and i.password == 'smuckers_home_boy'),
    ]
)

class login:
    def __init__(self):
        self.form = login_form()

    def GET(self):
        return render.login(self.form)

    def POST(self):
        if not self.form.validates():
            return render.login(self.form)
        web.ctx.session.user = self.form.username.value
        raise web.seeother('/admin')