brew安裝Python3時(shí)出現(xiàn)的問(wèn)題：

$ brew install python3
Warning: python3 3.6.3 is already installed, it's just not linked.
You can use `brew link python3` to link this version.
$ brew link python3
Linking /usr/local/Cellar/python3/3.6.3... Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks
1
2
3
4
5

發(fā)現(xiàn)/usr/local/下沒(méi)有路徑/usr/local/Frameworks
需要新建該路徑，并修改權(quán)限

解決：

$ sudo mkdir /usr/local/Frameworks
$ sudo chown $(whoami):admin /usr/local/Frameworks
1
2

成功：

$ brew link python3
Linking /usr/local/Cellar/python3/3.6.3... 1 symlinks created
1
2

參考：
https://github.com/Homebrew/homebrew-core/issues/19286