example.address

{
  "type": "object",
  "$defs": {
    "country_code": {
      "type": "string",
      "pattern": "^[A-Z]{2}$"
    }
  },
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "street",
    "city",
    "country"
  ],
  "properties": {
    "city": {
      "type": "string"
    },
    "kind": {
      "enum": [
        "billing",
        "shipping"
      ],
      "type": "string"
    },
    "street": {
      "type": "string"
    },
    "country": {
      "$ref": "#/$defs/country_code"
    },
    "postcode": {
      "type": [
        "string",
        "null"
      ]
    }
  },
  "$id": "https://schematalog.com/api/schemas/example.address/versions/1.0",
  "title": "example.address"
}

$defs:
  country_code:
    pattern: ^[A-Z]{2}$
    type: string
$id: https://schematalog.com/api/schemas/example.address/versions/1.0
$schema: https://json-schema.org/draft/2020-12/schema
properties:
  city:
    type: string
  country:
    $ref: '#/$defs/country_code'
  kind:
    enum:
    - billing
    - shipping
    type: string
  postcode:
    type:
    - string
    - 'null'
  street:
    type: string
required:
- street
- city
- country
title: example.address
type: object

from __future__ import annotations

from enum import Enum
from typing import Optional

from pydantic import BaseModel, RootModel, constr


class Kind(Enum):
    billing = 'billing'
    shipping = 'shipping'


class CountryCode(RootModel[constr(pattern=r'^[A-Z]{2}$')]):
    root: constr(pattern=r'^[A-Z]{2}$')


class ExampleAddress(BaseModel):
    city: str
    kind: Optional[Kind] = None
    street: str
    country: CountryCode
    postcode: Optional[str] = None

{
  "type": "record",
  "name": "ExampleAddress",
  "fields": [
    {
      "name": "city",
      "type": "string"
    },
    {
      "name": "kind",
      "type": [
        "null",
        {
          "type": "enum",
          "name": "Kind",
          "symbols": [
            "billing",
            "shipping"
          ],
          "namespace": "example.address"
        }
      ],
      "default": null
    },
    {
      "name": "street",
      "type": "string"
    },
    {
      "name": "country",
      "type": "string"
    },
    {
      "name": "postcode",
      "type": [
        "null",
        "string"
      ],
      "default": null
    }
  ],
  "namespace": "example.address"
}