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Kv Design Language

Kivy provides a design language specifically geared towards easy and scalable GUI Design. The language makes it simple to separate the interface design from the application logic, adhering to the separation of concerns principle. For example:


In the above code :

<LoginScreen>:  # every class in your app can be represented by a rule like
                # this in the kv file
    GridLayout: # this is how you add your widget/layout to the parent
                # (note the indentation).
        rows: 2 # this how you set each property of your widget/layout

That’s it, that’s how simple it is to design your GUI in the Kv language. For a more in-depth understanding, please refer to the Kv language documentation.