[shirian]

Kivy has interface definition language, similar to XAML, in the way YAML is similar to XML. It's called Kivy-language [1]

[1]: https://kivy.org/docs/api-kivy.lang.html

[y4mi]

And to answer the parents question: there is to my knowledge no wysiwyg editor for kivy.

You can however write the code and directly execute it. There is no compile time to speak of, so it's not that bad.