官方安装指南：
https://pytorch.org/get-started/locally/
强制重装：
pip install –force-reinstall torch –index-url https://download.pytorch.org/whl/cu128
pip install -r requirements.txt –extra-index-url=https://download.pytorch.org/whl/cu118
其它镜像源：
https://mirror.sjtu.edu.cn/pytorch-wheels
#2.3.1+cu121
.\.env\python -m pip install torch==2.3.1 torchvision=0.18.1 torchaudio==2.3.1 -i https://mirror.sjtu.edu.cn/pytorch-wheels/cu121
# 2.3.0+cu118
pip install torch==2.3.0+cu118 torchvision==0.18.0+cu118 torchaudio==2.3.0+cu118 -f https://mirror.sjtu.edu.cn/pytorch-wheels/torch_stable.html
# 2.3.0+cu121
pip install torch==2.3.0+cu121 torchvision==0.18.0+cu121 torchaudio==2.3.0+cu121 -f https://mirror.sjtu.edu.cn/pytorch-wheels/torch_stable.html
# 2.2.0+cu118
pip install torch==2.2.0+cu118 torchvision==0.17.0+cu118 torchaudio==2.2.0+cu118 -f https://mirror.sjtu.edu.cn/pytorch-wheels/torch_stable.html
# 2.2.0+cu121
pip install torch==2.2.0+cu121 torchvision==0.17.0+cu121 torchaudio==2.2.0+cu121 -f https://mirror.sjtu.edu.cn/pytorch-wheels/torch_stable.html
# 2.1.0+cu118
pip install torch==2.1.0+cu118 torchvision==0.16.0+cu118 torchaudio==2.1.0+cu118 -f https://mirror.sjtu.edu.cn/pytorch-wheels/torch_stable.html
# 2.1.0+cu121
pip install torch==2.1.0+cu121 torchvision==0.16.0+cu121 torchaudio==2.1.0+cu121 -f https://mirror.sjtu.edu.cn/pytorch-wheels/torch_stable.html
# 2.0.0+cu118
pip install torch==2.0.0+cu118 torchvision==0.15.1+cu118 torchaudio==2.0.1+cu118 -f https://mirror.sjtu.edu.cn/pytorch-wheels/torch_stable.html
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