Well, the prose description of the enhancement is just words added to this issue :)

For the patch, you can use the unix 'diff -u' command or, if you want to get more involved in contributing, read the instructions for checking out the repository in docs.python.org/devguide, check it out, apply your changes, and then do 'hg diff' to produce the patch file.  Either way, you attach the patch file to the issue with the 'File: browse' button.