python basci pre-commit

pre-commit

#!/bin/sh
#
# To enable this hook, rename this file to "pre-commit".

if git rev-parse --verify HEAD >/dev/null 2>&1
then
	against=HEAD
else
	# Initial commit: diff against an empty tree object
	against=$(git hash-object -t tree /dev/null)
fi

py_files_changed=$(git diff --cached --name-only $against | grep '.py$')

echo $py_files_changed | xargs black
echo $py_files_changed | xargs mypy
echo $py_files_changed | xargs git add