how to upgrade python on mac code example
Example 1: mac upgrade python to 3.8
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: how to set default python version in macos
ln -s -f /usr/local/bin/python3.7 /usr/local/bin/python
Example 4: which python mac
$ brew update && brew upgrade python
Example 5: mac why is python installed in usr and application
$ pyenv global 3.7.3
$ pyenv version
3.7.3 (set by /Users/mbbroberg/.pyenv/version)
Example 6: mac catallina python3
$ brew install pyenv