解决安装pytorch因网速问题失败的情况

pip install torch_nightly -f https://download.pytorch.org/whl/nightly/cu80/torch_nightly.html

source activate Python虚拟环境名
pip install /path/of/the/pytorch_package(pytorch离线安装包路径)

bash Anconda3-x.x.x-Linux-x86_64.sh

conda create -n <your-virtualenv-name> python=3.6

source activate <your-virtualenv-name>

conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/
conda config --set show_channel_urls yes

conda install pytorch torchvision cudatoolkit=10.1 -c pytorch

import torch 
print(torch.__version__) 
#如果返回版本信息，则安装成功

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://conda.anaconda.org/pytorch/linux-64/pytorch-1.3.1-py3.6_cuda10.1.243_cudnn7.6.3_0.tar.bz2>
Elapsed: -

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on your way.