Const Type

The const type is a special data type that allows a variable to be a single, fixed value. It does not have the same properties as the other generic types, but it has the following specific properties:

• const: The fixed value that the variable must always hold.

• description: Description of the const field.

Examples

from jambo import SchemaConverter


schema = {
    "title": "Country",
    "type": "object",
    "properties": {
        "name": {
            "const": "United States of America",
        }
    },
    "required": ["name"],
}

Model = SchemaConverter.build(schema)

obj = Model()
self.assertEqual(obj.name, "United States of America")

with self.assertRaises(ValueError):
    obj.name = "Canada"

with self.assertRaises(ValueError):
    Model(name="Canada")