Funny to see zope.interface on that list. I remember back in 2005, when Zope 3 had just been launched, about how everyone who mattered in the Zope world would say things like "only stupid, retrograde people won't switch to Zope3". I guess the stupid people won, because 6 years on Zope is like the Cobol of Python web frameworks. I just hope the same thing won't happen to Python itself.