A variation of the pre-commit-hook of the same name: [check_yaml.py](https://github.com/pre-commit/pre-commit-hooks/blob/master/pre_commit_hooks/check_yaml.py)

check_yaml.py

#!/usr/bin/env python

"""
Code governed by [LICENSE](https://github.com/pre-commit/pre-commit-hooks/blob/master/LICENSE)

Thank you pre-commit dev team: Anthony Sottile, Ken Struys

Original source: 
- https://github.com/pre-commit/pre-commit-hooks/blob/master/pre_commit_hooks/check_yaml.py

This is from commit [e1c091a4e31b346bbe9b2bffc33ccf4e82ef1beb](https://github.com/pre-commit/pre-commit-hooks/blob/e1c091a4e31b346bbe9b2bffc33ccf4e82ef1beb/pre_commit_hooks/check_yaml.py)
"""
import argparse
import sys

import yaml


try:
    from yaml.cyaml import CLoader as Loader
except ImportError:  # pragma: no cover (no libyaml-dev / pypy)
    Loader = yaml.Loader


def check_yaml(argv=None):
    parser = argparse.ArgumentParser()
    parser.add_argument('filenames', nargs='*', help='Yaml filenames to check.')
    args = parser.parse_args(argv)

    retval = 0
    for filename in args.filenames:
        try:
            yaml.load(open(filename), Loader=Loader)
            print "Successful ..."
        except yaml.YAMLError as exc:
            print exc
            retval = 1
    return retval


if __name__ == '__main__':
    sys.exit(check_yaml())