to install python 3.8 on mac code example
Example 1: mac os install python 3
brew install python3
Example 2: command to install python3.6 on mac os
$ brew install --ignore-dependencies https://raw.githubusercontent.com/Homebrew/homebrew-core/f2a764ef944b1080be64bd88dca9a1d80130c558/Formula/python.rb
Example 3: install python 3.4 mac terminal
$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Example 4: command to install python3.6 on mac os
$ brew unlink python