/// note | Технические детали

Вы также можете использовать `from starlette import status` вместо `from fastapi import status`.

**FastAPI** позволяет использовать как `starlette.status`, так и `fastapi.status` исключительно для удобства разработчиков. Но поставляется fastapi.status непосредственно из Starlette.

///

## Изменение кода статуса по умолчанию { #changing-the-default }

6. 这行代码返回的是包含 `items` 的字典，`items` 是数据类列表；

    FastAPI 仍能把数据<abbr title="把数据转换为可以传输的格式">序列化</abbr>为 JSON；

7. 这行代码中，`response_model` 的类型注解是 `Author` 数据类列表；

    再一次，可以把 `dataclasses` 与标准类型注解一起使用；

8. 注意，*路径操作函数*使用的是普通函数，不是异步函数；

    与往常一样，在 FastAPI 中，可以按需组合普通函数与异步函数；

### FastAPI Datenfilterung { #fastapi-data-filtering }

FastAPI seinerseits wird den Rückgabetyp sehen und sicherstellen, dass das, was zurückgegeben wird, **nur** diejenigen Felder enthält, welche im Typ deklariert sind.

import functools

from fastapi import FastAPI
from fastapi.testclient import TestClient

from .forward_reference_type import forwardref_method


def passthrough(f):
    @functools.wraps(f)
    def method(*args, **kwargs):
        return f(*args, **kwargs)

    return method


def test_wrapped_method_type_inference():
    """
    Regression test ensuring that when a method imported from another module

import time
from collections.abc import Callable

from fastapi import APIRouter, FastAPI, Request, Response
from fastapi.routing import APIRoute


class TimedRoute(APIRoute):
    def get_route_handler(self) -> Callable:
        original_route_handler = super().get_route_handler()

        async def custom_route_handler(request: Request) -> Response:
            before = time.time()

import json
from typing import Annotated, Any

import pytest
from fastapi import APIRouter, Depends, FastAPI, HTTPException
from fastapi.exceptions import FastAPIError
from fastapi.responses import StreamingResponse
from fastapi.testclient import TestClient


class Session:
    def __init__(self) -> None:
        self.open = True


def dep_session() -> Any:
    s = Session()
    yield s
    s.open = False

from fastapi.testclient import TestClient

from docs_src.sub_applications.tutorial001_py39 import app

client = TestClient(app)

openapi_schema_main = {
    "openapi": "3.1.0",
    "info": {"title": "FastAPI", "version": "0.1.0"},
    "paths": {
        "/app": {
            "get": {
                "responses": {
                    "200": {
                        "description": "Successful Response",

from typing import Annotated, TypeVar

from fastapi import Depends, FastAPI
from fastapi.testclient import TestClient

app = FastAPI()

T = TypeVar("T")

Dep = Annotated[T, Depends()]


class A:
    pass


class B:
    pass


@app.get("/a")
async def a(dep: Dep[A]):
    return {"cls": dep.__class__.__name__}


@app.get("/b")
async def b(dep: Dep[B]):
    return {"cls": dep.__class__.__name__}

* Once you think the PR is ready, move it in the internal GitHub project for me to review it.

## FastAPI People PRs

Every month, a GitHub Action updates the FastAPI People data. Those PRs look like this one: <a href="https://github.com/fastapi/fastapi/pull/11669" class="external-link" target="_blank">👥 Update FastAPI People</a>.

If the tests are passing, you can merge it right away.

## External Links PRs

### FastAPI Data Filtering { #fastapi-data-filtering }

Now, for FastAPI, it will see the return type and make sure that what you return includes **only** the fields that are declared in the type.