As written above, the cut is this evaluation -- https://github.com/tensorflow/swift/commit/028f245ef3ca735b18379e7340e08a52a787bd5b#diff-bb05f2ec01e7a0e33b23298

As written above, the cut is this evaluation -- https://github.com/tensorflow/swift/commit/028f245ef3ca735b18379e7340e08a52a787bd5b#diff-bb05f2ec01e7a0e33b23298eabf44dc5 https://github.com/tensorflow/swift/commit/028f245ef3ca735b1... ... written by Chris Lattner when he joined Google Brain and found Python lacking as a language for doing ML work. He evaluated a bunch of alternatives and decided that Swift would be a good choice, so he's now working with a team to explore that. As far as Google at large is concerned, there was no cut of anything. Google keeps producing new ML code in Python and new ML frameworks in Python on a daily basis