Fix your messed up homebrew python installs (macOS). For recent version & symlink conflicts.

fixbrewpy.sh

#!/usr/bin/env bash
brew uninstall --force --ignore-dependencies python python2 python2.7 python3 python3.6 > /dev/null 2>&1;
brew install python@2 python@3 > /dev/null 2>&1;
echo;
for x in python python2 python3;
    do
    which $x;
    readlink $(which $x);
    $x --version;
    echo; 
done