tkinter Option Menu Is missing
You need to use the pack() method on your Frame in init, otherwise the argument self within your OptionMenu doesn't refer to an existing Frame.
Try this:
class WMGUI(tk.Frame): ''' A GUI for wm ''' def __init__(self, parent=None, *, title='WM'): if parent is None: parent = tk.Tk() tk.Frame.__init__(self, parent) self.parent = parent self.pack() #packs the Frame self.initUI(title) def initUI(self, title): """ do not call from outside of class """ self.parent.title(title) # make game_menu game_menu_var = tk.IntVar() game_menu_var.set(1) self.game_menu = tk.OptionMenu(self, game_menu_var, 1, 2 , 3) self.game_menu.pack(side="left")Alternatively, the parent widget is self.parent, so you could make that the master of self.game_menu:
self.game_menu = tk.OptionMenu(self.parent, game_menu_var, 1, 2 , 3)