Text Auto-fill

[ChuckDubya at gmail.com]

It's common in web browsers to have a text auto-fill function for
personal information or passwords or whatnot.  The flavor that I'm
referring to is the kind that pops up as you're typing the word, not
the kind that fills text fields before typing has started.

Well I want to know how to do that in Python.  I'm looking to edit IDLE
so that it doesn't take me forever to code four lines.

Eventually, I want to create a Visual Basic-type environment for
myself.  I'm a moron, and I need all the coding help I can get.