Check YAML syntax with shell and python

check_yaml.sh

#!/bin/sh

set +e
declare -i RESULT=0

if [ -z $1 ] ; then
  echo "Usage $0 <directory to check>"
  exit 1
fi

YAML_PATH_LIST=$(find $1 -type f -name "*.yaml")

if [ -z "$YAML_PATH_LIST" ] ; then
  echo 'Nothing to check'
  exit 0
else
  echo -e "YAML files to check syntax:\n$YAML_PATH_LIST"
fi

for YAML_PATH in $YAML_PATH_LIST ; do
  python -c "import yaml; stream = open(\"${YAML_PATH}\", 'r'); yaml.load(stream)"
  RESULT+=$?
done

exit $RESULT