with pytest.warns(FastAPIDeprecationWarning):

        @app.get("/path_example_examples/{item_id}")
        def path_example_examples(
            item_id: str = Path(
                example="item_overridden",
                examples=["item_1", "item_2"],
            ),
        ):
            return item_id

    with pytest.warns(FastAPIDeprecationWarning):

        @app.get("/query_example/")

import warnings
from collections.abc import Sequence
from dataclasses import dataclass
from enum import Enum
from typing import Annotated, Any, Callable, Optional, Union

from fastapi.exceptions import FastAPIDeprecationWarning
from fastapi.openapi.models import Example
from pydantic import AliasChoices, AliasPath
from pydantic.fields import FieldInfo
from typing_extensions import Literal, deprecated

from ._compat import (
    Undefined,
)

from typing import Annotated

import pytest
from fastapi import FastAPI, Query
from fastapi.exceptions import FastAPIDeprecationWarning
from fastapi.testclient import TestClient

from .utils import needs_py310


def get_client():
    app = FastAPI()
    with pytest.warns(FastAPIDeprecationWarning):

        @app.get("/items/")
        async def read_items(
            q: Annotated[str | None, Query(regex="^fixedquery$")] = None,

    Undefined,
    UndefinedType,
    Validator,
    annotation_is_pydantic_v1,
)
from fastapi.datastructures import DefaultPlaceholder, DefaultType
from fastapi.exceptions import FastAPIDeprecationWarning, PydanticV1NotSupportedError
from pydantic import BaseModel
from pydantic.fields import FieldInfo
from typing_extensions import Literal

from ._compat import v2

if TYPE_CHECKING:  # pragma: nocover

from typing import Annotated

import pytest
from fastapi import FastAPI, Form
from fastapi.exceptions import FastAPIDeprecationWarning
from fastapi.testclient import TestClient
from inline_snapshot import snapshot

from .utils import needs_py310


def get_client():
    app = FastAPI()
    with pytest.warns(FastAPIDeprecationWarning):

        @app.post("/items/")
        async def read_items(

            marks=(
                needs_py310,
                pytest.mark.filterwarnings(
                    "ignore:`regex` has been deprecated, please use `pattern` instead:fastapi.exceptions.FastAPIDeprecationWarning"
                ),
            ),
        ),
    ],
)
def get_client(request: pytest.FixtureRequest):
    mod = importlib.import_module(
        f"docs_src.query_params_str_validations.{request.param}"

    _get_flat_fields_from_params,
    get_flat_dependant,
    get_flat_params,
    get_validation_alias,
)
from fastapi.encoders import jsonable_encoder
from fastapi.exceptions import FastAPIDeprecationWarning
from fastapi.openapi.constants import METHODS_WITH_BODY, REF_PREFIX
from fastapi.openapi.models import OpenAPI
from fastapi.params import Body, ParamTypes
from fastapi.responses import Response

        self.body = body


class PydanticV1NotSupportedError(FastAPIError):
    """
    A pydantic.v1 model is used, which is no longer supported.
    """


class FastAPIDeprecationWarning(UserWarning):
    """
    A custom deprecation warning as DeprecationWarning is ignored
    Ref: https://sethmlarson.dev/deprecations-via-warnings-dont-work-for-python-libraries

* ✅ Run performance tests only on Pydantic v2. PR [#14608](https://github.com/fastapi/fastapi/pull/14608) by [@tiangolo](https://github.com/tiangolo).

## 0.127.1

### Refactors

* 🔊 Add a custom `FastAPIDeprecationWarning`. PR [#14605](https://github.com/fastapi/fastapi/pull/14605) by [@tiangolo](https://github.com/tiangolo).

### Docs