This works for me. Hope it helps. from tkinter import messagebox
messagebox.showerror("Hi", f"Hello World") -----Original Message----- From: Python-list <python-list-bounces+jschwar=sbcglobal....@python.org> On Behalf Of Rob Cliffe via Python-list Sent: Friday, May 12, 2023 3:55 AM To: Python <python-list@python.org> Subject: Learning tkinter I am trying to learn tkinter. Several examples on the internet refer to a messagebox class (tkinter.messagebox). But: Python 3.8.3 (tags/v3.8.3:6f8c832, May 13 2020, 22:20:19) [MSC v.1925 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import tkinter >>> tkinter.messagebox Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: module 'tkinter' has no attribute 'messagebox' >>> Why is this? TIA Rob Cliffe -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list