My Code:

import wx
import wx.xrc
from ldap3 import Server, Connection, SUBTREE, ALL_ATTRIBUTES, AUTO_BIND_NO_TLS
import getpass

class MyApp(wx.App):

def OnInit(self):
self.frame = MyFrame(None)
self.SetTopWindow(self.frame)
self.frame.Show()
return True


class MyFrame (wx.Frame):

def ...