Python Kivy ListView: How to delete selected ListItemButton? -

i'm trying learn kivy building simple todo-list app suggested dusty phillips, author of book "creating apps in kivy".

this code far:

from kivy.app import app kivy.uix.boxlayout import boxlayout kivy.properties import objectproperty kivy.uix.listview import listitembutton   class taskbutton(listitembutton):     pass   class todoroot(boxlayout):     task_input = objectproperty()     task_list = objectproperty()      def add_task(self):         self.task_list.adapter.data.extend([self.task_input.text])         self.task_list._trigger_reset_populate()      def del_task(self):         pass   class todoapp(app):     def build(self):         return todoroot()   if __name__ == '__main__':     todoapp().run() 

and kv file:

#: import main todo #: import listadapter kivy.adapters.listadapter.listadapter #: import listitembutton kivy.uix.listview.listitembutton  todoroot:  <todoroot>:     orientation: "vertical"     task_input: task_input_view     task_list: tasks_list_view      boxlayout:         size_hint_y: none         height: "40dp"          textinput:             id: task_input_view             size_hint_x: 70         button:             text: "add"             size_hint_x: 15             on_press: root.add_task()         button:             text: "del"             size_hint_x: 15             on_press: root.del_task()     listview:         id: tasks_list_view         adapter:             listadapter(data=[], cls=main.taskbutton) 

this looks like:

i know listview api still experimental , i'm complaining examples on using adapters / converters, google & search didn't either. code needed make del-button work , remove selected listitembutton?

after lot of reading listview api docs & examples, found out myself. need selection-property of listadapter-class, can call inherited remove method of adapter.data-listproperty.

so interesested code:

def del_task(self, *args):     if self.task_list.adapter.selection:         selection = self.task_list.adapter.selection[0].text         self.task_list.adapter.data.remove(selection)         self.task_list._trigger_reset_populate()