Kivy: Unknown class error code

Question

This is the main.py

from kivy.app import App
    
    
class WeatherApp(App):
    pass
    
    
if __name__ == \'__main__\         


        

Answer 1

I solve this with:

main.py

from kivy.app import App 
from kivy.uix.recycleview import RecycleView

class RV(RecycleView):
    def __init__(self, **kwargs):
        super(RV, self).__init__(**kwargs)
        self.data = [{'text': str(values)} for values in ["Palo Alto, MX", "Palo Alto, US"]]


class WeatherAPP(App):
    pass

if __name__ == '__main__':
    WeatherAPP().run()

weather.kv

#:kivy 1.10
AddLocationForm:

:
    orientation: 'vertical'
    BoxLayout:
        TextInput:
        Button:
            text: "Search"
        Button:
            text: "Current Location"
    RV:
        viewclass: 'Label'
        RecycleBoxLayout:
            default_size: None, dp(56)
            default_size_hint: 1, None
            size_hint_y: None
            height: self.minimum_height
            orientation: 'vertical'