Dynamic lists in Kivy

list.kv

#:import la kivy.adapters.listadapter
#:import listview kivy.uix.listview

<MyList>:
    adapter: la.ListAdapter(
        data=[],
        args_converter=self.list_item_args_converter,
        cls=listview.ListItemButton)
    
<MyScreen>:
    my_list: my_list
    MyList:
        id: my_list

list.py

class MyObject:
    def __init__(self, text=''):
        self.text = text
        
        
class MyList(ListView):
    def list_item_args_converter(self, row_index, obj):
        return {'text': obj.text}
        
    def update(self):
        self.adapter.data = [
            MyObject('Fred'),
            MyObject('Bob'),
        ]
        

class MyScreen(Screen):
    my_list = ObjectProperty()
    
    def on_pre_enter(self):
        self.my_list.update()