Mac下切换Python版本

1.查看python版本

/usr/bin/python
Jiaheng:~ jiaheng$ which python3
/Library/Frameworks/Python.framework/Versions/3.8/bin/python3
Jiaheng:~ jiaheng$ which python3.8
/Library/Frameworks/Python.framework/Versions/3.8/bin/python3.8

2.修改版本

• 修改用户根目录下的~/.bash_profile文件，在终端输入：

Jiaheng:~ jiaheng$ open ~/.bash_profile

• 在文件中新增一行：

alias python=”/Library/Frameworks/Python.framework/Versions/3.8/bin/python3.8″

• 添加完之后执行：

Jiaheng:~ jiaheng$ source ~/.bash_profile

• 验证：

Jiaheng:~ jiaheng$ python –version