基于Conda完成创建多版本python环境

1. 通过cmd打开conda环境

d:\ProgramData\Anaconda3\Scripts\activate

2. 创建python3.7的环境

conda create -n py3.7 python=3.7

产生错误

Collecting package metadata (repodata.json): failed
UnavailableInvalidChannel: The channel is not accessible or is invalid.
channel name: pypi/simple
channel url: http://mirrors.aliyun.com/pypi/simple
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.

3. 解决UnavailableInvalidChannel错误
   按照提示输出channels和sources

(base) E:\vscode\zhaopin>conda config --show channels
channels:
  - http://mirrors.aliyun.com/pypi/simple/

(base) E:\vscode\zhaopin>conda config --show-sources
==> C:\Users\DELL\.condarc <==
ssl_verify: True
channels:
  - http://mirrors.aliyun.com/pypi/simple/
show_channel_urls: True

移除指定的案例镜像

(base) E:\vscode\zhaopin>conda config --remove-key channels

(base) E:\vscode\zhaopin>conda config --show-sources
==> C:\Users\DELL\.condarc <==
ssl_verify: True
show_channel_urls: True


(base) E:\vscode\zhaopin>conda config --show channels
channels:
  - defaults

4. 重新创建python3.7环境

conda create -n py3.7 python=3.7.0

5. 激活python3.7的环境

conda activate py3.7

6. 查看存在的python版本

conda env list