我是python新手,我遇到了一个错误:异常:App.root中的实例无效
我使用VSCode,代码如下:我是python新手,我遇到了一个错误:异常:App.root中的实例无效,python,kivy,Python,Kivy,我使用VSCode,代码如下: import kivy from kivy.app import App from kivy.uix.label import Label from kivy.uix.gridlayout import GridLayout from kivy.uix.textinput import TextInput from kivy.uix.button import Button from kivy.uix.widget import Widget cla
import kivy
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.widget import Widget
class RajdeepGrid():
pass
class RajdeepApp(App):
def build(self):
return RajdeepGrid()
if __name__ == "__main__":
RajdeepApp().run()
现在,当我在所有导入之后执行此操作时,会出现以下错误:
异常:App.root中的实例无效看起来您的
类RajdeepGrid():
应该继承自Kivy类,如类RajdeepGrid(GridLayout):