在Anaconda2020.02中使用python3.6

一、创建虚拟环境

Anaconda个人版(以前称为Anaconda发行版)2020.02版本中默认的python版本是3.7，但同时提供了python3.6和python3.8的元软件包。
想将python3.7切换为python3.6或python3.8，请执行如下命令：

conda create -n py36 anaconda=2020.02 python=3.6

conda create -n py38 anaconda=2020.02 python=3.8

这里以py36为例。执行命令后的运行情况大致如下：

Collecting package metadata (current_repodata.json): done
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: done

## Package Plan ##

  environment location: /root/anaconda3/envs/py36

  added / updated specs:
    - anaconda=2020.02
    - python=3.6


The following packages will be downloaded:




The following NEW packages will be INSTALLED:




Preparing transaction: done
Verifying transaction: done
Executing transaction: done
#
# To activate this environment, use
#
#     $ conda activate py36
#
# To deactivate an active environment, use
#
#     $ conda deactivate

至此python3.6环境安装成功。运行中途会询问你是否继续(Proceed ([y]/n)?)，输入y即可。

启用python3.6，输入命令：

conda activate py36

停用python3.6，输入命令：

conda deactivate

二、拓展部分 - 删除虚拟环境

先停用虚拟环境：

conda deactivate

然后查看虚拟环境及所在路径：

conda env list

最后删除指定的虚拟环境，-p后面是所要删除的虚拟环境的路径：

conda env remove -p /home/xxx/.conda/envs/py36

另一种删除指定的虚拟环境的方法，-n后面是所要删除的虚拟环境名：

conda remove -n py36 --all

参考：
[1]Team Anaconda.Anaconda Individual Edition 2020.02: New Name, Exciting Features[EB/OL].https://www.anaconda.com/blog/anaconda-individual-edition-2020-02-new-name-exciting-features ,MAR 11, 2020.