What's the simplest cross-platform way to pop up graphical dialogs in Python?

Question

I want the simplest possible way to pop up simple dialogs in Python scripts. Ideally, the solution would:

• Work on Windows, OS X, Gnome, KDE
• Look like

Answer 1

wxPython is the best Python GUI library (IMO) and uses native widgets.

import wx
app = wx.PySimpleApp()
dialog = wx.MessageDialog(None, 'wxPython is awesome!', 'Dialog Box', wx.OK|wx.ICON_INFORMATION)
dialog.ShowModal()
dialog.Destroy()
app.MainLoop()