Demo of Q re: how to access something after runTouchApp() has been called

appInternals.py

from kivy.app import App
from kivy.uix.screenmanager import Screen, ScreenManager
from kivy.garden.graph import Graph

class appInternalsScreen(Screen):

    def __init__(self, **kwargs):
        super(appInternalsScreen, self).__init__(**kwargs)
        G = Graph(x_grid_label=True, y_grid_label=True,
                  x_ticks_major = 10, y_ticks_major = 10)
        self.add_widget(G)

class appInternalsApp(App):

    def build(self):
        self.sm = ScreenManager()
        self.sm.add_widget(appInternalsScreen(name='home'))
        return self.sm

if __name__ == '__main__':
    IA = appInternalsApp()
    IA.run()

Working solution:

from kivy.app import App
from kivy.uix.screenmanager import Screen, ScreenManager
from kivy.garden.graph import Graph
from functools import partial

def remove_end_labels(axis, parent, obj):
  if len(obj) and all(obj) and not eval('parent.been_thru_' + axis):
    reduced_list = obj[1:-1]
    exec('parent.been_thru_' + axis + ' = True')
    exec('parent._' + axis + '_grid_label = reduced_list')
    reduced_list = eval('parent._ticks_major' + axis)[1:-1]
    exec('parent._ticks_major' + axis + ' = reduced_list')

remove_end_labels_x = partial(remove_end_labels, 'x')
remove_end_labels_y = partial(remove_end_labels, 'y')

class appInternalsScreen(Screen):

  def __init__(self, **kwargs):
    super(appInternalsScreen, self).__init__(**kwargs)
    G = Graph(x_grid_label=True, y_grid_label=True,
        x_ticks_major = 10, y_ticks_major = 10)
    G.been_thru_x = G.been_thru_y = False
    G.bind(_x_grid_label=remove_end_labels_x,
                _y_grid_label=remove_end_labels_y)
    self.add_widget(G)

class appInternalsApp(App):

  def build(self):
    self.sm = ScreenManager()
    self.sm.add_widget(appInternalsScreen(name='home'))
    return self.sm

if __name__ == '__main__':
  IA = appInternalsApp()
  IA.run()

Nice solution, just started messing with Kivy this week and couldn't find info anywhere else about this. 😄

I was interested in finding out why it worked and ended up writing a StackOverflow answer with my findings. Check it out @ http://stackoverflow.com/questions/24664181/how-do-i-run-a-function-once-the-form-is-loaded-kivy