Mac 下 Python3安装

1.使用一下命令安装
brew install python3

2.如果出现以下错误:
Warning: python3 3.6.3 is already installed, it’s just not linked.
You can use brew link python3 to link this version.

运行 brew link python3

3.出现以下错误:
Linking /usr/local/Cellar/python/3.6.5… Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks/Python.framework

发现/usr/local/下没有路径/usr/local/Frameworks 
需要新建该路径,并修改权限

运行以下命令
s u d o m k d i r / u s r / l o c a l / F r a m e w o r k s sudo chown $(whoami):admin /usr/local/Frameworks

4.重新运行以下命令
brew link python3

5.查看版本命令
python –version

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转载自blog.csdn.net/sunnysu99/article/details/80583565