Python pre-commit hook

pre-commit.sh

#!/bin/sh

# make sure requirements.txt is up to date with every commit
# by comparing the output of pip freeze
pip freeze | diff requirements.txt - > /dev/null
if [ $? != 0 ]
then
    echo "Missing python module dependencies in requirements.txt. Run 'pip freeze > requirements.txt' to update."
    exit 1
fi

# run pyflakes on all the python source files in the repo
FAULTS=$(find ./* -iname "*.py" -exec pyflakes {} \; 2>&1 | grep -c -v "undefined name '_'")

if [ $FAULTS != 0 ]
then
    find ./* -iname "*.py" -exec pyflakes {} \; 2>&1 | grep -v "undefined name '_'"
    #exit 1
fi

# check for forgotten set_trace()
grep -n 'set_trace()' `find ./* -iname '*.py'` && exit 1 || exit 0

Is it somehow to add this to a .pre-commit-config.yaml file by referencing it or do I have to copy the file into my repository?