python 查看import package/function的具体路径
https://blog.csdn.net/qingfengxd1/article/details/105610274
https://blog.csdn.net/Li_Hungchieh/article/details/102991834
如下查看nn/d2l包的具体路径,以及查看nn.CrossEntropyLoss函数的路径
https://blog.csdn.net/qingfengxd1/article/details/105610274
https://blog.csdn.net/Li_Hungchieh/article/details/102991834
如下查看nn/d2l包的具体路径,以及查看nn.CrossEntropyLoss函数的路径