Kivy Removing Elements From A Stack- / Gridlayout

I made a pop-up. It is basically some rows of options (max. 5 rows). If I press the '+' button, there will be a new line of options. If I press the '-' button the last row should d

Solution 1:

Get the widget, and remove it.
An example of that:

from kivy.app import App
from kivy.lang import Builder


root = Builder.load_string('''

BoxLayout:
    GridLayout:
        id: grid
        cols: 1
        rows: 5
        Label:
            text: "label 1"
        Label:
            text: "label 2"
        Label:
            text: "label 3"
        Label:
            text: "label 4"

    Button:
        text: "Remove last item"
        on_release: grid.remove_widget(grid.children[0])

''')



class MyApp(App):

    def build(self):
        return root

MyApp().run()