upgrade python 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: update link python is python 3
$ python --version
Python 2.7.6
$ python3 --version
Python 3.4.3
$ alias python=python3
$ python --version
Python 3.4.3
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
# and verify it worked
$ pyenv version
3.7.3 (set by /Users/mbbroberg/.pyenv/version)
Example 6: mac catallina python3
$ brew install pyenv