学习深度学习时候，很多人参考的是李沐的动手学深度学习Pytorch版本（附上官方地址：https://tangshusen.me/Dive-into-DL-PyTorch/#/）。
在学习3.5.1节 “获取数据集” 时，会遇到d2lzh_pytorch包缺少的问题，经过查阅资料，下面方法可以解决这个问题。
import torchimport torchvisionimport torchvision.transforms as transformsimport matplotlib.pyplot as pltimport timeimport syssys.path.append("..") # 为了导入上层目录的d2lzh_pytorchimport d2lzh_pytorch as d2l
首先下载d2lzh_pytorch包文件（地址：链接：/s/1WTYOPj_M0C7kzFNSgYH5rw提取码：z878），失效可百度自找。解压后，放到自己安装Anaconda下面的Lib文件夹中。右键属性把文件索引地址放进源码中。我的供参考：
但是接着出现了一个问题，提示没有 torchtext 的module。百度搜torchtext，使用pip安装，直接运行这句程序即可。
pip install /pytorch/text/archive/master.zip
然后提示安装成功。
再次运行3.5.1节第一段代码。
待成功后运行下面代码：
mnist_train = torchvision.datasets.FashionMNIST(root='~/Datasets/FashionMNIST', train=True, download=True, transform=transforms.ToTensor())mnist_test = torchvision.datasets.FashionMNIST(root='~/Datasets/FashionMNIST', train=False, download=True, transform=transforms.ToTensor())print(type(mnist_train))print(len(mnist_train), len(mnist_test))
最后提示如下成功。
0it [00:00, ?it/s]Downloading http://fashion-mnist.s3-website.eu-central-/train-images-idx3-ubyte.gz to C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\raw\train-images-idx3-ubyte.gz26427392it [00:06, 3888254.22it/s]Extracting C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\raw\train-images-idx3-ubyte.gz to C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\raw0it [00:00, ?it/s]Downloading http://fashion-mnist.s3-website.eu-central-/train-labels-idx1-ubyte.gz to C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\raw\train-labels-idx1-ubyte.gz32768it [00:00, 33876.82it/s] 0it [00:00, ?it/s]Extracting C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\raw\train-labels-idx1-ubyte.gz to C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\rawDownloading http://fashion-mnist.s3-website.eu-central-/t10k-images-idx3-ubyte.gz to C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\raw\t10k-images-idx3-ubyte.gz4423680it [00:02, 2118055.67it/s] 0it [00:00, ?it/s]Extracting C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\raw\t10k-images-idx3-ubyte.gz to C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\rawDownloading http://fashion-mnist.s3-website.eu-central-/t10k-labels-idx1-ubyte.gz to C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\raw\t10k-labels-idx1-ubyte.gz8192it [00:00, 12252.34it/s] Extracting C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\raw\t10k-labels-idx1-ubyte.gz to C:\Users\wang/Datasets/FashionMNIST\FashionMNIST\rawProcessing...Done!
<class 'torchvision.datasets.mnist.FashionMNIST'>60000 10000
