python

ysd for Python

The ysd package converts between JSON Schema and YAMLSchema using the native libysd library bundled in each wheel.

from ysd import YAMLSchema

ysd = YAMLSchema()

schema = {
    "type": "object",
    "properties": {"name": {"type": "string"}},
    "required": ["name"],
}

source = ysd.json_schema_to_ysd(schema)
roundtripped = ysd.ysd_to_json_schema(source)

Methods that accept JSON Schema accept Python JSON-compatible values, JSON text, or YAML text. Methods returning JSON Schema have object and _text forms.

yaml_schema = """\
type: object
properties:
  name:
    type: string
required: [name]
"""

source = ysd.json_schema_to_ysd(yaml_schema)

Validation

The package performs conversion rather than instance validation. Its results can be used directly with the Python jsonschema package:

from jsonschema import Draft202012Validator

Draft202012Validator(roundtripped).validate({"name": "Ada"})

The package requires Python 3.10 or newer.