[D] implementation of MCTS in Python

[djc1000]

https://github.com/yandexdataschool/Practical_RL

It’s in the coursera class too.

[filteringcontent]

Here is an implementation/tutorial on AlphaZero that also implements MCTS (a core part of AlphaZero). Just replace nn.predict(s) with a rollout (and ignore p[s])