from kivy.app import App
from kivy.uix.button import Button
#from kivy.uix.codeinput import CodeInput
#from pygments.lexers import HtmlLexer

from kivy.config import Config
Config.set('graphics', 'resizable', '0');

from kivy.uix.floatlayout import FloatLayout
from kivy.uix.scatter import Scatter

# noinspection PyUnreachableCode
class MyApp(App):
    def build(self):
        s = Scatter()
        fl = FloatLayout(size = (300, 300))
        s.add_widget(fl)
        fl.add_widget(Button(
            text="Это Кнопка!",
            font_size = 16,
            on_press = self.btn_press,
            background_color = [.32, .85, .94, 1],
            background_normal = '',
            size_hint =  (.5, .25),
            pos = (0, 10)));
        return s

    def btn_press(self, instance):
        print("Кнопка нажата!")
        instance.text = "Я нажата"


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