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Application built from a .kv file

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This shows how to implicitly use a .kv file for your application. You should see a full screen button labelled “Hello from test.kv”.

After Kivy instantiates a subclass of App, it implicitly searches for a .kv file. The file test.kv is selected because the name of the subclass of App is TestApp, which implies that kivy should try to load “test.kv”. That file contains a root Widget.

File application/app_with_kv.py

'''
Application built from a  .kv file
==================================

This shows how to implicitly use a .kv file for your application. You
should see a full screen button labelled "Hello from test.kv".

After Kivy instantiates a subclass of App, it implicitly searches for a .kv
file. The file test.kv is selected because the name of the subclass of App is
TestApp, which implies that kivy should try to load "test.kv". That file
contains a root Widget.
'''

import kivy
kivy.require('1.0.7')

from kivy.app import App


class TestApp(App):
    pass


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

File application/test.kv

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#:kivy 1.0

Button:
    text: 'Hello from test.kv'