splash screen python file

from kivy.uix.screenmanager import Screen, ScreenManager, NoTransition
from kivymd.app import MDApp
from kivy.clock import Clock
import os

BASE_PATH = os.path.abspath('./utils/design_files/')

class SplashScreen(Screen):
    def __init__(self, **kw):
        self._splash_kv_file = Builder.load_file(filename=f"{BASE_PATH}/splash_screen_design.kv")
        super().__init__(**kw)
        self.tip_labels = ["Tip 1: Your tip text here.",
                           "Tip 2: Another tip text.",
                           "Tip 3: More tips...",
                           "Tip 4: Customize your tips."]
        self.show_random_tip()

    def show_random_tip(self):
        self.ids.tip_label.text = choice(self.tip_labels)

class MyApp(MDApp):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.screen = None

    def build(self):
        self.title = "My-App"

        # Create a ScreenManager with no transition
        screen_manager = ScreenManager(transition=NoTransition())
        splash_screen = SplashScreen(name='splash')
        screen_manager.add_widget(splash_screen)
        Clock.schedule_once(self.switch_to_main_screen, 5)
        return screen_manager

    def switch_to_main_screen(self, _):
        pass