My Python Setup (macOS Mojave and up)

# My setup to make learning Python easier

#   First we get the most recent Python version.
#   As of this writing, that's 3.8

#   If you don't use Homebrew yet, now's a good time to fix that.
#   Open Terminal and go like this:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"


#   Done?
#   Now do:

brew install python@3.8


#    Let's get us a decent Vim for the Desktop

brew install macvim
#   brew installed apps cannot be seen by Spotlight, so you can't use
#   that to launch these apps. Here's a workaround:
#   Create an Automator app that runs this shell script
#   open /usr/local/opt/macvim/MacVim.app $@

#   Or just get it readymade with Spotlight launchability from here
#   https://macvim-dev.github.io/macvim/
#   Difference? The brew version only has Python3 built-in (:py3 commands).


#   Cleanup and set it up

brew cleanup


#   Brewage is done, now we set our system up to have BOTH,
#   the legacy Python many macOS apps need to function and the
#   current one that we want to learn. Without screwing up either.

#   Put this in your .bash_profile

export PYTHONPATH=/usr/local/opt/python@3.8/bin
export LDFLAGS="-L/usr/local/opt/python@3.8/lib"
export PKG_CONFIG_PATH="/usr/local/opt/python@3.8/lib/pkgconfig"

export PATH=$PATH:$PYTHONPATH


#   PIP for us is now PIP3 and the PYTHON command is now PYTHON3
#   Test it by typing PYTHON -V and PYTHON3 -V
#   If everything went correctly, you now have both versions available to you.


#   Brew's MacVim is here: /usr/local/Cellar/macvim/[the version number]/MacVim.app
#   Double click that or type "open MacVim.app" and once launched, drag the icon
#   where you want it in your Dock

#   The easiest way to run your Python script in Vim is via

:!python3 %

#   The '%' part is your current buffer. You can set this up as a key-binding for
#   running your code with one key-press.

# That's basically it. Now you can wander off and customise the rest to your heart's content.