gistfile1.sh

#!/bin/sh
# git post-commit hook for pyflakes'ing modified files
git log --oneline --name-only | sed -n '2,$p' | while read f; do
    if [ "${f%.py}" != "$f" -a -e "$f" ]; then
        echo "$f"
    elif file "$f" 2> /dev/null | grep python > /dev/null 2>&1; then
        echo "$f"
    fi
done | xargs pyflakes || echo "PYFLAKES FAILED, PLEASE INSPECT"