We are obligated to provide assignments in TensorFlow in Coursera (but we can provide PyTorch versions in addition to TF). That said, our TF notebooks are designed for TF v1 (latest version is 1.15.2), and some only work with 1.13.1 (looking at you, seq2seq). Would be nice if our Coursera notebooks were less outdated. Currently we have a [branch](https://github.com/yandexdataschool/Practical_RL/tree/tf2.x) ([diff](https://github.com/yandexdataschool/Practical_RL/compare/master...tf2.x)) with some TFv2 notebooks, but not all.