Builder.load_string(
    """
<Example>:
    Image:
        source: 'kivy.png'
        size_hint: None,None
        size: 64,64
    RelativeLayout
        size_hint: None,None
        size: 64,64
        canvas.before:
            Translate:
                x: 64
            Rotate:
                angle: 90
                axis: 0,0,1
        Image:
            source: 'kivy.png'
            size_hint: None,None
            size: 64,64
"""
    )


class Example(App, StackLayout):

    def build(self):
        return self
if __name__ == '__main__':
    Example().run()
Киви как повернуть картинку