macos update python code example
Example 1: upgrade python version mc
brew install python3
brew update && brew upgrade python
alias python=/usr/local/bin/python3
Example 2: mac os install python 3
brew install python3
Example 3: which python mac
$ brew update && brew upgrade python
Example 4: mac catallina python3
$ brew install pyenv
Example 5: install python 3.4 mac terminal
$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"