Aşağıdaki sitedeki kodları inceleyip kendi koduma aktarmaya çalışdım ama hata aldım. Amacım ilk ekrandan 3 sny bekleyip ikinci ekrana geçmek. bu kadar 
https://stackoverflow.com/questions/4885...and-python

https://stackoverflow.com/questions/4885...and-python
PHP Kod:
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.lang import Builder
from threading import Timer
Builder.load_string("""
<main2>:
BoxLayout
Label:
text: "Screen 1"
<main3>:
BoxLayout
Label:
text: "Screen 2"
""")
class main2(Screen):
pass
class main3(Screen):
pass
sm = ScreenManager()
sm.add_widget(main2(name = "main2"))
sm.add_widget(main3(name = "main3"))
class main(App):
def on_start(self):
s = Timer(3,self.next)
s.start()
def next(self):
self.manager.current = "main3()"
def build(self):
return sm
if __name__ == '__main__':
main().run()