App dock icon in wxPython

In wxPython on Mac OS X is it possible to display a custom icon when an application is launched. Right now when I launch the app I wrote, a blank white icon is displayed in the dock. How would I go about changing it?

From stackoverflow

• I have this in my setup file to add an icon:

  from setuptools import setup
  
  APP = ['MyApp.py']
  DATA_FILES = []
  OPTIONS = {'argv_emulation': True, 
      'iconfile': 'MyAppIcon.icns' }
  
  setup(
      app=APP,
      data_files=DATA_FILES,
      options={'py2app': OPTIONS},
      setup_requires=['py2app'],
  )
  

  I think you have to use an icns file. I used img2icns to create one.