Tkinter GUI: Update choices of an option menu depending on a choice from another option menu [duplicate]
An optionmenu is made up of two parts: a button and a menu. You can get these parts from the "children" attribute of the widget.
om = tk.OptionMenu(...)menu = om.children["menu"]You can delete all of the old values in the menu with standard menu functions:
menu.delete(0, "end")You can add new items to the menu with standard menu functions. You need to associate a command with each that sets the associated variable. So, for example, if you know the variable associated with the option menu is named "self.choice", you can do something like this:
for value in ("value1", "value2", ...): menu.add_command(label=value, command=lambda v=value: self.choice.set(v))