All Things Pythonic Interfaces or Abstract Base Classes? by Guido van van Rossum August 5, 2005 Summary I found this in my drafts, dated Feb 6 2005. I 'll just push it out now unedited. Original summary: I thought it was clear that we should add interfaces to Python, but Phillip Eby reminded me that years ago I rejected them in favor of Abstract Base Classes (ABCs). Why? I don't remember! Which do