Book: http://preview.d2l.ai/d2l-en/master/
d2l: pip install -U git+https://github.com/d2l-ai/d2l-en.git@master
d2l src code:
http://preview.d2l.ai/d2l-en/master/chapter_appendix-tools-for-deep-learning/d2l.html?highlight=rnnmodel#d2l.torch.RNNModelScratch
mxnet: http://preview.d2l.ai/d2l-en/master/_modules/d2l/mxnet.html
pytorch: http://preview.d2l.ai/d2l-en/master/_modules/d2l/torch.html
tensorflow: http://preview.d2l.ai/d2l-en/master/_modules/d2l/tensorflow.html
All: http://preview.d2l.ai/d2l-en/master/_modules/
More: Do these before you ask!