Blueprint schema validation

gistfile1.txt

BLUEPRINT_SCHEMA = {
    '$schema': 'http://json-schema.org/draft-04/schema#',
    'title': 'Blueprint',
    'description': '',

    'type': 'object',
    'required': ['title'],
    'properties': {

        'title': {
            'type': 'string',
            'minLength': 5
        },

        'description': {
            'type': 'string',
            'minLength': 10,
        },

        'hosts': {
            'type': 'array',
            'minItems': 1
        }
    }
}

BLUEPRINT = {
    'title': 'Foo',
    'description': ''
}

for error in jsonschema.Draft4Validator(BLUEPRINT_SCHEMA).iter_errors(BLUEPRINT):
        print error.message

'' is too short
'Foo' is too short