安装kivy

1. 进入虚拟环境

source venv/bin/activate

注：venv表示虚拟环境路径,  以后都会在虚拟环境中运行python

2. 安装kivy

升级pip
python -m pip install --upgrade pip
安装kivy
pip install "kivy[base]" kivy_examples

3. 代码测试

main.py

import os
os.environ['KIVY_IMAGE'] = 'sdl2, pil, pygame, imageio, tex, dds'
    
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout

class IndexPage(BoxLayout):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        
class TestApp(App):
    def build(self):
        return IndexPage()
        
if '__main__' == __name__:
    TestApp().run()

test.kv

<IndexPage>:
    Button:
        text: 'Hello World!'

进入代码文件夹运行main.py

python main.py