【转载】Mac中python2、python3共存方法

不同版本Python路径

Mac系统自带Python2.7，而我们安装Python3的时候，可以通过brew命令安装或者官网的pkg安装。

安装后，它们的文件保存路径如下：

来源	python安装路径
系统默认	/System/Library/Frameworks/Python.framework/Versions/2.7
brew安装	/usr/local/Cellar/python
官网pkg安装	/Library/Frameworks/Python.framework/Versions/2.7

 

配置环境变量，vim ~/.bash_profile

# Setting PATH for Python 2.7

PATH="/Library/Frameworks/Python.framework/Versions/2.7/bin:${PATH}"

export PATH

# Setting PATH for Python 3.10

PATH="/Library/Frameworks/Python.framework/Versions/3.10/bin:${PATH}"

 

python版本动态切换，vim ~/.bashrc

alias python2='/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7'

alias python3='/Library/Frameworks/Python.framework/Versions/3.10/bin/python3.10'

 

Mac python2、python3共存设置完成