Kivy表格布局（Grid Layout）中自定义组件位置的方法，可以通过指定组件的row和col属性来实现。

Python实现

from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.button import Button
class MyGridLayout(GridLayout):
    def __init__(self, **kwargs):
        super(MyGridLayout, self).__init__(**kwargs)
        self.cols = 3  # 设定3列
        # 添加按钮并指定位置
        self.add_widget(Button(text='1', row=0, col=0))
        self.add_widget(Button(text='2', row=0, col=1))
        self.add_widget(Button(text='3', row=0, col=2))
        self.add_widget(Button(text='4', row=1, col=0))
        self.add_widget(Button(text='5', row=1, col=1))
        self.add_widget(Button(text='6', row=1, col=2))
class MyApp(App):
    def build(self):
        return MyGridLayout()
if __name__ == '__main__':
    MyApp().run()

KV实现

from kivy.app import App
from kivy.lang import Builder
Builder.load_string('''
<MyGridLayout>:
    cols: 3  # 设定3列
    Button:
        text: '1'
        row: 0
        col: 0
    Button:
        text: '2'
        row: 0
        col: 1
    Button:
        text: '3'
        row: 0
        col: 2
    Button:
        text: '4'
        row: 1
        col: 0
    Button:
        text: '5'
        row: 1
        col: 1
    Button:
        text: '6'
        row: 1
        col: 2
''')
class MyGridLayout(GridLayout):
    pass
class MyApp(App):
    def build(self):
        return MyGridLayout()
if __name__ == '__main__':
    MyApp().run()