Kivy BoxLayout align widgets to the top border

Question

I'm using the following Kivy code to create BoxLayout with buttons:

BoxLayout:
    orientation: "vertical"
    width: 200
    size_hint_x: None

    Button:
        size_hint_y: None
        height: 30
        text: 'btn1'

    Button:
        size_hint_y: None
        height: 30
        text: 'btn2'

    Button:
        size_hint_y: None
        height: 30
        text: 'btn3'

But buttons stick to the bottom edge, how can i push them towards the top edge of the layout?

Answer 1

You can also put an empty Widget at the end to take up the space.

BoxLayout:
    orientation: "vertical"
    width: 200
    size_hint_x: None

    Button:
        size_hint_y: None
        height: 30
        text: 'btn1'

    Button:
        size_hint_y: None
        height: 30
        text: 'btn2'

    Button:
        size_hint_y: None
        height: 30
        text: 'btn3'

    Widget: