pip安装torch错误ERROR: Could not find a version that satisfies the requirement torch及解决办法

使用pip安装PyTorch时报如下错误：

ERROR: Could not find a version that satisfies the requirement torch>=1.6.0

直接改成运行

pip install torch==1.6.0+cu101 torchvision==0.7.0+cu101 -f /whl/torch_stable.html

即可