from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput


class LoginScreen(GridLayout):

    def __init__(self, **kwargs):
        super(LoginScreen, self).__init__(**kwargs)
        self.cols = 2
        self.add_widget(Label(text='User Name'))
        self.username = TextInput(multiline=False)
        self.add_widget(self.username)
        self.add_widget(Label(text='password'))
        self.password = TextInput(password=True, multiline=False)
        self.add_widget(self.password)


class MyApp(App):

    def build(self):
        return LoginScreen()

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

from TouchInterface import MyApp


if __name__ == '__main__':
    # Point where I start up other Modules in future ...
    MyApp().run()

[INFO   ] [Logger      ] Record log in /root/.kivy/logs/kivy_16-07-04_36.txt
[INFO   ] [Kivy        ] v1.9.2-dev0
[INFO   ] [Python      ] v2.7.9 (default, Mar  8 2015, 00:52:26)
[GCC 4.9.2]
[INFO   ] [Factory     ] 193 symbols loaded
[INFO   ] [Image       ] Providers:  (img_tex, img_dds, img_gif, img_sdl2, img_pil, img_ffpyplayer ignored)
[CRITICAL] [App         ] Unable to get any Image provider, abort.

runner.py
example
  - assets
      - image.png
  - __init__.py
  - example.py
  - example.kv

from example import run

if __name__ == "__main__":
    run()

from .example import run

from kivy.app import App

class ExampleApp(App):
    kv_file: 'example/example.kv'

def run():
    ExampleApp().run()

#:kivy 1.10.0
#:import kivy kivy
#:import win kivy.core.window

FloatLayout:
    canvas:
        Color:
            rgb: 1, 1, 1,
        Rectangle:
            source: 'example/assets/image.png'
            size: self.size