一探torch.nn究竟“What is torch.nn really?”

来自： https://pytorch.org/tutorials/beginner/nn_tutorial.html 

《What is torch.nn really?》这文章看起来不能再流畅了，看完就能了解pytorch的究竟。

by Jeremy Howard, fast.ai. Thanks to Rachel Thomas and Francisco Ingham.

推荐入门pytorch必看。