kivy.garden.moretransitions が更新されたようなので試してみた

test_moretransitions.py

from kivy.app import runTouchApp
from kivy.lang import Builder
from kivy.uix.button import Button
from kivy.garden.moretransitions import (
    PixelTransition, RippleTransition, BlurTransition, RVBTransition,
    RotateTransition, TileTransition, FastSlideTransition,
)

ALL_TRANSITIONS = (
    PixelTransition, RippleTransition, BlurTransition, RVBTransition,
    RotateTransition, TileTransition, FastSlideTransition,
)

root = Builder.load_string('''
BoxLayout:
    ScreenManager:
        id: manager
        Screen:
            name: '1'
            Image:
                source: 'data/logo/kivy-icon-512.png'
                allow_stretch: True
        Screen:
            name: '2'
            TextInput:
                font_size: '50sp'
                text: "'kivy.garden.moretransitions' was updated recently."
    BoxLayout:
        id: boxlayout
        size_hint_x: .3
        orientation: 'vertical'
''')

manager = root.ids.manager
boxlayout = root.ids.boxlayout

for transition in ALL_TRANSITIONS:
    def on_press(button, _transition=transition):
        manager.transition = _transition(duration=2)
        manager.current = manager.next()
    boxlayout.add_widget(Button(text=transition.__name__,
                                on_press=on_press))

runTouchApp(root)