Может кто-нибудь, пожалуйста, скажите мне, что я делаю неправильно, импортируя тест, который я сделал в свой проект

Question

Мой основной python файл, в который я хочу импортировать тест:

# main.py

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.properties import ObjectProperty
from kivy.uix.popup import Popup
from kivy.uix.label import Label
from database import DataBase



class CreateAccountWindow(Screen):
    namee = ObjectProperty(None)
    email = ObjectProperty(None)
    password = ObjectProperty(None)

    def submit(self):
        if self.namee.text != "" and self.email.text != "" and self.email.text.count("@") == 1 and self.email.text.count(".") > 0:
            if self.password != "":
                db.add_user(self.email.text, self.password.text, self.namee.text)

                self.reset()

                sm.current = "login"
            else:
                invalidForm()
        else:
            invalidForm()

    def login(self):
        self.reset()
        sm.current = "login"

    def reset(self):
        self.email.text = ""
        self.password.text = ""
        self.namee.text = ""


class LoginWindow(Screen):
    email = ObjectProperty(None)
    password = ObjectProperty(None)

    def loginBtn(self):
        if db.validate(self.email.text, self.password.text):
            MainWindow.current = self.email.text
            self.reset()
            sm.current = "main"
        else:
            invalidLogin()

    def createBtn(self):
        self.reset()
        sm.current = "create"

    def reset(self):
        self.email.text = ""
        self.password.text = ""


class MainWindow(Screen):
    n = ObjectProperty(None)
    created = ObjectProperty(None)
    email = ObjectProperty(None)
    current = ""

    def Proceed(self):
        sm.current = "Home"
    def on_enter(self, *args):
        password, name, created = db.get_user(self.current)
        self.n.text = "Account Name: " + name
        self.email.text = "Email: " + self.current
        self.created.text = "Created On: " + created

class HomeWindow(Screen):
    current = ""

    def logOut(self):
        sm.current = "login"


class PapersWindow(Screen):
    current = ""

    def Chemistry(self):
        sm.current = "chemistry"

    def logOut(self):
        sm.current = "login"

class ChemistryWindow(Screen):
    current = ""

    def next(self):
        sm.current = "this"

from app import Question

class NineteenWindow(Screen):
    pass

class WindowManager(ScreenManager):
    pass

class WindowManager(ScreenManager):
    pass


def invalidLogin():
    pop = Popup(title='Invalid Login',
                  content=Label(text='Invalid username or password.'),
                  size_hint=(None, None), size=(400, 400))
    pop.open()


def invalidForm():
    pop = Popup(title='Invalid Form',
                  content=Label(text='Please fill in all inputs with valid information.'),
                  size_hint=(None, None), size=(400, 400))

    pop.open()


kv = Builder.load_file("my.kv")

sm = WindowManager()
db = DataBase("users.txt")

screens = [LoginWindow(name="login"), CreateAccountWindow(name="create"), MainWindow(name="main"), HomeWindow(name="Home"), PapersWindow(name="papers"), ChemistryWindow(name="chemistry"), NineteenWindow(name="this")]
for screen in screens:
    sm.add_widget(screen)

sm.current = "login"



class MyMainApp(App):
    def build(self):
        return sm


if __name__ == "__main__":
    MyMainApp().run()

В файле kv у меня есть

<CreateAccountWindow>:
    name: "create"

    namee: namee
    email: email
    password: passw

    FloatLayout:
        cols: 1

        FloatLayout:
            size: root.width, root.height/2

            Label:
                text: "Create an Account"
                size_hint: 0.8, 0.2
                pos_hint: {"x":0.1, "top":1}
                font_size: (root.width**2 + root.height**2) / 14**4

            Label:
                size_hint: 0.5,0.12
                pos_hint: {"x":0, "top":0.8}
                text: "Name: "
                font_size: (root.width**2 + root.height**2) / 14**4

            TextInput:
                pos_hint: {"x":0.5, "top":0.8}
                size_hint: 0.4, 0.12
                id: namee
                multiline: False
                font_size: (root.width**2 + root.height**2) / 14**4

            Label:
                size_hint: 0.5,0.12
                pos_hint: {"x":0, "top":0.8-0.13}
                text: "Email: "
                font_size: (root.width**2 + root.height**2) / 14**4

            TextInput:
                pos_hint: {"x":0.5, "top":0.8-0.13}
                size_hint: 0.4, 0.12
                id: email
                multiline: False
                font_size: (root.width**2 + root.height**2) / 14**4

            Label:
                size_hint: 0.5,0.12
                pos_hint: {"x":0, "top":0.8-0.13*2}
                text: "Password: "
                font_size: (root.width**2 + root.height**2) / 14**4

            TextInput:
                pos_hint: {"x":0.5, "top":0.8-0.13*2}
                size_hint: 0.4, 0.12
                id: passw
                multiline: False
                password: True
                font_size: (root.width**2 + root.height**2) / 14**4

        Button:
            pos_hint:{"x":0.3,"y":0.25}
            size_hint: 0.4, 0.1
            font_size: (root.width**2 + root.height**2) / 17**4
            text: "Already have an Account? Log In"
            on_release:
                root.manager.transition.direction = "left"
                root.login()

        Button:
            pos_hint:{"x":0.2,"y":0.05}
            size_hint: 0.6, 0.15
            text: "Submit"
            font_size: (root.width**2 + root.height**2) / 14**4
            on_release:
                root.manager.transition.direction = "left"
                root.submit()


<LoginWindow>:
    name: "login"

    email: email
    password: password

    FloatLayout:

        Label:
            text:"Email: "
            font_size: (root.width**2 + root.height**2) / 13**4
            pos_hint: {"x":0.1, "top":0.9}
            size_hint: 0.35, 0.15

        TextInput:
            id: email
            font_size: (root.width**2 + root.height**2) / 13**4
            multiline: False
            pos_hint: {"x": 0.45 , "top":0.9}
            size_hint: 0.4, 0.15

        Label:
            text:"Password: "
            font_size: (root.width**2 + root.height**2) / 13**4
            pos_hint: {"x":0.1, "top":0.7}
            size_hint: 0.35, 0.15

        TextInput:
            id: password
            font_size: (root.width**2 + root.height**2) / 13**4
            multiline: False
            password: True
            pos_hint: {"x": 0.45, "top":0.7}
            size_hint: 0.4, 0.15

        Button:
            pos_hint:{"x":0.2,"y":0.05}
            size_hint: 0.6, 0.2
            font_size: (root.width**2 + root.height**2) / 13**4
            text: "Login"
            on_release:
                root.manager.transition.direction = "up"
                root.loginBtn()

        Button:
            pos_hint:{"x":0.3,"y":0.3}
            size_hint: 0.4, 0.1
            font_size: (root.width**2 + root.height**2) / 17**4
            text: "Don't have an Account? Create One"
            on_release:
                root.manager.transition.direction = "right"
                root.createBtn()


<MainWindow>:
    n: n
    email: email
    created:created

    FloatLayout:
        Label:
            id: n
            pos_hint:{"x": 0.1, "top":0.9}
            size_hint:0.8, 0.2
            text: "Account Name: "

        Label:
            id: email
            pos_hint:{"x": 0.1, "top":0.7}
            size_hint:0.8, 0.2
            text: "Email: "

        Label:
            id: created
            pos_hint:{"x": 0.1, "top":0.5}
            size_hint:0.8, 0.2
            text: "Created: "

        Button:
            pos_hint:{"x":0.2, "y": 0.1}
            size_hint:0.6,0.2
            text: "Proceed"
            on_release:
                app.root.current = "Home"
                root.manager.transition.direction = "down"

<HomeWindow>
    name: "Home"

    FloatLayout:
        Button:
            pos_hint:{"x":0.5, "y":0.5}
            size_hint:0.4,0.6
            text: "Pastpapers"
            on_release:
                app.root.current = "papers"
                root.manager.transition.direction = "down"


        Button:
            pos_hint:{"x":0.00, "y":0.8}
            size_hint:0.1,0.1
            text: "Log Out"
            on_release:
                app.root.current = "login"
                root.manager.transition.direction = "down"

<PapersWindow>
    name: "papers"

    FloatLayout:
        Button:
            pos_hint:{"x":0.5, "y":0.5}
            size_hint:0.4,0.6
            text: "Chemistry"
            on_release:
                app.root.current = "chemistry"
                root.manager.transition.direction = "down"


        Button:
            pos_hint:{"x":0.00, "y":0.8}
            size_hint:0.1,0.1
            text: "Log Out"
            on_release:
                app.root.current = "login"
                root.manager.transition.direction = "down"

<ChemistryWindow>
    name: "chemistry"

    FloatLayout:
        Button:
            pos_hint:{"x":0.5, "y":0.5}
            size_hint:0.4,0.6
            text: "next"
            on_release:
                app.root.current = "this"
                root.manager.transition.direction = "down"

<NineteenWindow>
    name: "this"


WindowManager:
    LoginWindow
    MainWindow
    HomeWindow

В первом файле python Викторины : (Question.py)

class Question():
    def __init__(self, prompt, answer):
        self.prompt = prompt
        self.answer = answer

Второй python файл для теста: (app.py)

from Question import Question

question_prompts = [
    "What color is an egg?\n(a) White\n(b) Purple\n(c) Orange\n\n",
    "What comes after b?\n(a) A\n(b) V\n(c) C\n\n",
    "Which of these is a color?\n(a) Teal\n(b) Magneta\n(c) Yellow\n\n"
]

questions = [
    Question(question_prompts[0], "a"),
    Question(question_prompts[1], "c"),
    Question(question_prompts[2], "c"),
]

def run_test(questions):
    score = 0
    for question in questions:
        answer = input(question.prompt)
        if answer == question.answer:
            score += 1
    print("You got " + str(score) + "/" + str(len(questions)) + "correct")


run_test(questions)

Теперь я хочу поместить тест в NineteenWindow. Когда я попытался импортировать тест, как вы можете видеть в классе NineteenWindow в main.py, а затем запустил код, я получил тест в терминале запуска, как показано на рисунке, и затем код перестал работать дальше. Я хочу, чтобы он был виден на экранах, по которым я могу перемещаться, нажимая кнопки.