yamlson

#!/usr/bin/env python

import sys, json, yaml

def transform(filename=None):
    stream = sys.stdin if filename is None else open(filename, 'rb')
    return json.dumps(yaml.load(stream), separators=(',',':'))

if __name__ == '__main__':
    sys.stdout.write(transform(*sys.argv[1:]))
    sys.stdout.write("\n")