Mac Python版本

查看python版本

which python3

which python3
/Library/Frameworks/Python.framework/Versions/3.10/bin/python3

安装python

1.下载
从官方下载网站获得任何Python版本下载
https://www.python.org/downloads/release/python-2718/
运行安装即可

which python2.7
which python3.10

2. 默认安装目录

/Library/Frameworks/Python.framework/Versions/3.10
/Library/Frameworks/Python.framework/Versions/2.7

3. 配置环境变量
1）终端输入：vim ~/.bash_profile 编辑文件并输入如下内容：

# python 3
#alias python="/Library/Frameworks/Python.framework/Versions/3.10/bin/python3.10"
#export PATH=$PATH:/Library/Frameworks/Python.framework/Versions/3.10/bin/pip3.10
#alias pip="/Library/Frameworks/Python.framework/Versions/3.10/bin/pip3.10"

# python 2
alias python="/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7"
export PATH=$PATH:/Library/Frameworks/Python.framework/Versions/2.7/bin/pip2.7
alias pip="/Library/Frameworks/Python.framework/Versions/2.7/bin/pip2.7"

4. 查看版本

python2 -V
python3 -V