1. linux 安装pytorch报错

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/linux-64/current_repodata.json>
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.
'https//mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/linux-64'

这大概是安全的问题，你的conda源使用的是https协议，比如我的
“/home/fcgna_xcb/.condarc”
内容如下：

channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/Paddle/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/fastai/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/bioconda/
show_channel_urls: true
ssl_verify: false

把每一个https改成http就可以了
更改后的如下：

channels:
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/Paddle/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/fastai/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/bioconda/
show_channel_urls: true
ssl_verify: false

2.pip install -U openmim 报错

输入

pip install -U openmim

报错

有可能是服务器在其他国家，需要手动设置

把这三行复制到~/.bashrc里

export http_proxy=http://127.0.0.1:3128
export https_proxy=${http_proxy}
export ftp_proxy=${http_proxy}

source ~/.bashrc