A snippet that shows how to validate json against a schema using jsonschema.

json_validator.py

import json
import jsonschema
import requests

def get_valid_json(self, data, json_schema_url):
    """
    Validates a json artifact against a published schema.
    """
    s = requests.get(url=json_schema_url)
    schema = s.json()
    jsonschema.Draft4Validator.check_schema(schema)
    jsonvalidator = jsonschema.Draft4Validator(schema)
    try:
        assert jsonvalidator.is_valid(data)
        return data
    except AssertionError as e:
        raise AssertionError

You usually wouldn't use is_valid (or assert), so it's actually even slightly easier :).

def get_valid_json(self, data, json_schema_url):
    schema = requests.get(url=json_schema_url).json()
    jsonschema.validate(data, schema)
    return data

which raises a ValidationError when it fails.