kivy 6 property

#main.py

from kivy.app import App

from kivy.uix.boxlayout import BoxLayout

import random

from kivy.properties import ListProperty

class ScatterTextWidget(BoxLayout):

    text_colour = ListProperty([1, 0, 0, 1])

    def change_label_colour(self, *args):

        colour = [random.random() for i in [0,1,2]] + [1]

        print(colour)

        self.text_colour = colour

class TutorialApp(App):

    def build(self):

        return ScatterTextWidget()

TutorialApp().run()

-----------------------

#tutorial.kv

#:import random random

<ScatterTextWidget>:

    orientation: 'vertical'

    TextInput:

        id: textinput_id

        font_size: 150

        size_hint_y: None

        height: 200

        text: 'default'

        on_text: root.change_label_colour()

        #on_text: label_id.color = [random.random() for i in [0,1,2]] + [1]

    FloatLayout:

        Scatter:

            Label:

                id: label_id

                text: textinput_id.text

                font_size: 150

                color: root.text_colour

    BoxLayout:

        orientation: 'horizontal'

        size_hint_y: None

        height: 150

        Label:

            id: label1

            text: textinput_id.text[:3]

            font_size: 100

            color: root.text_colour

        Label:

            id: label2

            text: textinput_id.text[-3:]

            font_size: 100

            color: root.text_colour

reference:

https://www.youtube.com/watch?v=OkW-1uzP5Og&list=PLdNh1e1kmiPP4YApJm8ENK2yMlwF1_edq&index=7