Anaconda创建虚拟环境失败 Collecting package metadata (repodata.json): failed

Collecting package metadata (repodata.json): failed

UnavailableInvalidChannel: The channel is not accessible or is invalid.
  channel name: anaconda/pkgs/main
  channel url: http://mirrors.aliyun.com/anaconda/pkgs/main
  error code: 404

You will need to adjust your conda configuration to proceed.
Use `conda config --show channels` to view your configuration's current state,
and use `conda config --show-sources` to view config file locations.
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更换Anaconda镜像源：打开.condarc文件，替换其他源：

channels:
  - defaults
show_channel_urls: true
default_channels:
  - https://mirrors.bfsu.edu.cn/anaconda/pkgs/main
  - https://mirrors.bfsu.edu.cn/anaconda/pkgs/r
  - https://mirrors.bfsu.edu.cn/anaconda/pkgs/msys2
custom_channels:
  conda-forge: https://mirrors.bfsu.edu.cn/anaconda/cloud
  pytorch: https://mirrors.bfsu.edu.cn/anaconda/cloud
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更多源参考：https://blog.csdn.net/weixin_43667077/article/details/106521015