constraints.URL.message = {item} - неверный URL-адрес.
constraints.Required.message = {item} обязательно.
constraints.TypeInteger.message = {item} должно быть числом.
constraints.TypeLong.message = {item} должно быть числом.
constraints.TypeFloat.message = {item} должно быть числом.
constraints.TypeDouble.message = {item} должно быть числом.
constraints.TypeAny.message = {item} не может быть преобразовано в {propertyType}.

from pydantic import BaseModel

app = FastAPI()


class Cookies(BaseModel):
    session_id: str
    fatebook_tracker: str | None = None
    googall_tracker: str | None = None


@app.get("/items/")
async def read_items(cookies: Cookies = Cookie()):

from typing import Annotated, Union

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(
    hidden_query: Annotated[Union[str, None], Query(include_in_schema=False)] = None,
):
    if hidden_query:
        return {"hidden_query": hidden_query}
    else:

from typing import Union

from fastapi import FastAPI
from pydantic.v1 import BaseModel


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    size: float


app = FastAPI()


@app.post("/items/")
async def create_item(item: Item) -> Item:

import org.opensearch.transport.client.Client;

/**
 * SuggestBulkFileWriter is an implementation of the SuggestWriter interface.
 * This class is responsible for writing and deleting suggest items in bulk.
 *
 * <p>Currently, the methods in this class throw UnsupportedOperationException
 * as they are not yet implemented.</p>
 *
 * @see SuggestWriter
 */

        "custom_field": [1.0, 2.0, 3.0]
    }
    assert ta.json_schema() == snapshot(
        {
            "properties": {
                "custom_field": {
                    "items": {"type": "number"},
                    "title": "Custom Field",
                    "type": "array",
                }
            },
            "required": ["custom_field"],
            "title": "MyModel",

constraints.URL.message = {item} non è un URL valido.
constraints.Required.message = {item} è richiesto.
constraints.TypeInteger.message = {item} deve essere un numero.
constraints.TypeLong.message = {item} deve essere un numero.
constraints.TypeFloat.message = {item} deve essere un numero.
constraints.TypeDouble.message = {item} deve essere un numero.
constraints.TypeAny.message = {item} non può essere convertito in {propertyType}.

app = FastAPI()


class CommonHeaders(BaseModel):
    host: str
    save_data: bool
    if_modified_since: str | None = None
    traceparent: str | None = None
    x_tag: list[str] = []


@app.get("/items/")
async def read_items(headers: Annotated[CommonHeaders, Header()]):

from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: set[str] = set()


@app.post("/items/", response_model=Item, status_code=status.HTTP_201_CREATED)
async def create_item(item: Item):

class CommonHeaders(BaseModel):
    host: str
    save_data: bool
    if_modified_since: Union[str, None] = None
    traceparent: Union[str, None] = None
    x_tag: list[str] = []


@app.get("/items/")
async def read_items(headers: CommonHeaders = Header()):