python jsonschema validation error for top-level oneOf construct

testjsonschema.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import json
import jsonschema

schema_json = '''
{
    "$schema": "http://json-schema.org/draft-04/schema",
    "oneOf": [{
        "type": "object",
        "properties": {
            "graph": {
                "$ref": "#/definitions/graph"
            }
        },
        "additionalProperties": false,
        "required": ["graph"]
    }, {
        "type": "object",
        "properties": {
            "id": {
                "type": "string"
            },
            "graphs": {
                "type": "array",
                "items": {
                    "$ref": "#/definitions/graph"
                }
            }
        },
        "additionalProperties": false
    }],
    "definitions": {
        "graph": {
            "type": "object",
            "additionalProperties": false,
            "required": ["id"],
            "properties": {
                "id": {
                    "type": "string"
                },
                "label": {
                    "type": "string"
                }
            }
        }
    }
}
'''

working_network_json = '''
{
    "graph": {
        "id": "testid",
        "label": "testlabel"
    }
}
'''

bad_network_json = '''
{
    "graph": {
        "label": "testlabel"
    }
}
'''


def main():

    working_network = json.loads(working_network_json)
    bad_network = json.loads(bad_network_json)
    schema = json.loads(schema_json)

    print "Validating working network"
    jsonschema.validate(working_network, schema)

    print "Validating bad network"
    jsonschema.validate(bad_network, schema)


if __name__ == '__main__':
    main()

肤错过