with pytest.raises(TypeError):
            vars(asyncpg_uuid)
        return {"fast_uuid": asyncpg_uuid}

    class SomeCustomClass(BaseModel):
        model_config = {"arbitrary_types_allowed": True}

        a_uuid: MyUuid

        @field_serializer("a_uuid")
        def serialize_a_uuid(self, v):
            return str(v)

    @app.get("/get_custom_class")
    def return_some_user():

                                "schema": {
                                    "title": "Item Id",
                                    "type": "string",
                                    "format": "uuid",
                                },
                                "name": "item_id",
                                "in": "path",
                            }
                        ],

    IPv6Interface,
    IPv6Network,
)
from pathlib import Path, PurePath
from re import Pattern
from types import GeneratorType
from typing import Annotated, Any, Callable, Optional, Union
from uuid import UUID

from annotated_doc import Doc
from fastapi.exceptions import PydanticV1NotSupportedError
from fastapi.types import IncEx
from pydantic import BaseModel
from pydantic.color import Color

* 📝 Update tech stack in project generation docs. PR [#14472](https://github.com/fastapi/fastapi/pull/14472) by [@alejsdev](https://github.com/alejsdev).

### Internal

* ✅ Add test for Pydantic v2, dataclasses, UUID, and `__annotations__`. PR [#14477](https://github.com/fastapi/fastapi/pull/14477) by [@tiangolo](https://github.com/tiangolo).

## 0.124.0

### Features