在创建虚拟环境的时候总是遇到：

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://conda.anaconda.org/conda-forge/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://conda.anaconda.org/conda-forge/linux-64'

解决方案：

1. conda config --show channels

比如这里除了defaults，还有四个channel

2. 删除conda-forge

conda config --remove channels conda-forge

 现在就可以装了orz