Back in 2001 I started writing an Apple ][ emulator in Python. In 2006 I started a rewrite but today I went back to my original 2001 version, updated it a little and put it up on GitHub.
There are still issues to sort out but you can get the code at: http://jtauber.com/applepy/
The original post was in the categories: python announcements open_source apple_ii applepy but I'm still in the process of migrating categories over.
There may be broken links to media on this page. I'm still in the process of migrating them over.