One can currently save the contents of a shell window exactly as is, with opening message, prompts, and restarts. This essentially a screenshot of the frame -- fine for an IDLE doc but not useful for rerunning the code.
Similarly, if one pastes in interactive input/output, with or without secondary prompts, into an edit window, it is a nuisance to edit.

This issue proposes an option to 'flip' code and output lines, with prompts deleted and outputs commented, so that

Python 3.2 (r32:88445, Feb 20 2011, 21:29:02) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> 1+2
3

becomes

#Python 3.2 (r32:88445, Feb 20 2011, 21:29:02) [MSC v.1500 32 bit (Intel)] on win32
#Type "copyright", "credits" or "license()" for more information.
1+2
#3

(Ignore linewrap artifact on first line).