An implementation of the JSON Schema specification
This currently only supports the latest json-schema specification except for a couple of keywords e.g $recursiveAnchor, $recursiveRef, unevaluatedProperties etc
It passes most of the tests in the official test suite
(I modified/remove one or two tests because the test suite hasn't been updated for draft_2019_09)
This is NOT intended to be used in production yet because it is still rough around the edges. (Error messages are currently not good enough and I don't know that I want to commit to maintaining this long term) but if I get enough good feedback I might reconsider 😁.
You should use validate_once when you are using a schema just once.
e.g
from jsonschema.draft_2019_09 import validate_once
# result is ValidationError or True
result = validate_once(schema=True, instance="an instance")If you are going to be using the same schema to validate different instances. You should construct a validator from the schema and then reuse that validator to validate the instances. e.g
from jsonschema.draft_2019_09 import construct_validator
validator = construct_validator(schema=True)
for instance in [True, 1234, {"key": "value"}, "string", ["abc"]]:
result = validator.validate(instance="an instance")This is similar to compiling regex and you can get significant speed improvements by compiling schemas that are used often
You can tweet at me at @opeispo. Did you find this code easy to read and understand? What would you do differently? Liked the approach?