Kivy Blueprints

Hello, Kivy

When learning a new programming language or technology, the first thing demonstrated to students is traditionally a "hello, world" program. This is how it looks in Python:

print('hello, world')

The Kivy version of a "hello, world" is a little lengthier and consists of two files, namely, a Python module and a .kv layout definition.

Code

A Kivy application's entry point is customarily called main.py, and its contents are as follows:

from kivy.app import App

class HelloApp(App):
    pass

if __name__ == '__main__':
    HelloApp().run()

As you can see, this takes Kivy's App class, adds absolutely nothing to it, and calls run().

Layout

A layout file is typically named after the application class, in this case HelloApp, sans the App suffix and in lowercase: ...