brew link python3出錯__python

brew安裝Python3時出現的問題：

$ brew install python3Warning: python3 3.6.3 is already installed, it's just not linked.You can use `brew link python3` to link this version.$ brew link python3Linking /usr/local/Cellar/python3/3.6.3... Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks

發現/usr/local/下沒有路徑/usr/local/Frameworks
需要建立該路徑，並修改許可權

解決：

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

成功：

$ brew link python3Linking /usr/local/Cellar/python3/3.6.3... 1 symlinks created

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