pre-commit-yapf

#!/bin/sh
#
# A hook script to verify what is about to be committed.
# Called by "git commit" with no arguments.  The hook should
# exit with non-zero status after issuing an appropriate message if
# it wants to stop the commit.

files=$(git diff --cached --name-only --diff-filter=ACM | grep "\.py$")

pass=true
for file in ${files}; do
    yapf -d ${file}
    if [ $? -eq 0 ]; then
        echo -e "\e[1;32mPassed:\e[0m ${file}"
    else
        echo -e "\e[1;31mFailed:\e[0m ${file}"
        pass=false
    fi
done

if ! $pass; then
  exit 1
fi