pytorch 下载mnist
时间: 2023-09-29 08:03:49 浏览: 129
PyTorch下MNIST数据集
要在PyTorch中下载MNIST数据集,可以按照以下步骤进行操作:
1. 首先,导入所需的库:
```
import torchvision
import torchvision.transforms as transforms
```
2. 使用`torchvision.datasets.MNIST`函数下载MNIST数据集并将其分为训练集和测试集:
```
train_data = torchvision.datasets.MNIST(root='MNIST', train=True, transform=transforms.ToTensor(), download=True)
test_data = torchvision.datasets.MNIST(root='MNIST', train=False, transform=transforms.ToTensor(), download=True)
```
3. 接下来,使用`torch.utils.data.DataLoader`函数创建数据加载器,以便在训练过程中批量加载数据:
```
from torch.utils.data import DataLoader
train_loader = DataLoader(dataset=train_data, batch_size=100, shuffle=True)
test_loader = DataLoader(dataset=test_data, batch_size=100, shuffle=True)
```
通过上述步骤,你可以在PyTorch中下载并加载MNIST数据集进行训练。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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