[9nGQluzmnq3M]

Python2 itself has been sunset, and Python3 the language is not compatible. It doesn't seem outrageous to me to require developers to use a new SDK if they want to migrate their apps to Python3 -- and that's optional too, since Python2 remains supported on GAE.

[jshen]

That's not the issue. I would have expected them to migrate their libraries to python3 (like every other major python library in the world). Instead they wrote entirely new libraries that aren't remotely the same, requiring a more or less rewrite of our app.