On 03/04/18 02:15, Rex via Tutor wrote: > At the Python command prompt, I write: > > import tkinter as tk > top = Tk() You forgot the module prefix. top = tk.Tk() -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos