python基础教程之mac命令行切换python版本

brew安装anaconda3#

Copy

brew cask install anaconda3

安装之后打开路径查看：/usr/local/anaconda3/bin

anaconda3环境变量设置#

Copy

vim ~/.zshrc export PATH=/usr/local/anaconda3/bin:$PATH source ~/.zshrc

验证

Copy

conda --version # 看到版本好就成功了

安装双版本#

Copy

conda create --name python2 python=2.7 conda create --name python3 python=3.7

查看目录 /usr/local/anaconda3/envs/

命令后切换python环境#

Copy

# 查看本地的py环境 ➜ ~ conda info -e # conda environments: # base * /usr/local/anaconda3 python2 /usr/local/anaconda3/envs/python2 python27 /usr/local/anaconda3/envs/python27 python3 /usr/local/anaconda3/envs/python3 # 进入py版本 ➜ ~ source activate python27 (python27) ➜ ~ # 退出py版本 conda deactivate

pip#

进入py版本之后，有时候不知道pip把安装包安装到哪里了，用这个方法很好使：

Copy

(python27) ➜ ~ python Python 2.7.18 |Anaconda, Inc.| (default, Apr 23 2020, 17:44:47) [GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import requests >>> requests <module 'requests' from '/usr/local/anaconda3/envs/python27/lib/python2.7/site-packages/requests/__init__.pyc'>

/usr/local/anaconda3/envs/python27/lib/python2.7/site-packages/requests/ 就是了。

ide vscode set#

参考#

https://www.cnblogs.com/zhoulin1234/p/9893055.html https://blog.csdn.net/ninnyyan/article/details/80485507