"Google has extremely strong C++ and Java constituencies along our Python one (and minor but feisty groups militating for Ruby, Haskell, and other languages yet), so I have no doubt that appengine is destinied to be multilanguage by and by, whether that makes technical and business sense or not (I???d opine ???not??? but I wouldn???t want to express publically an opinion misaligned with my beloved" . . . .