import wx


class MyFrame(wx.Frame):
    def __init__(self, parent, title=""):
        super(MyFrame, self).__init__(parent, title=title)

        # Set an application icon
        self.SetIcon(wx.Icon("appIcon.png"))

        # Set the panel
        self.panel = wx.Panel(self)

class MyApp(wx.App):
    def OnInit(self):
        self.frame = MyFrame(None, title="Main Frame")
        self.frame.Show()
        return True


if __name__ == "__main__":
    app = MyApp(False)
    app.MainLoop()