You can use the convenience variables from `fastapi.status`.

{* ../../docs_src/response_status_code/tutorial002_py39.py hl[1,6] *}

They are just a convenience, they hold the same number, but that way you can use the editor's autocomplete to find them:

<img src="/img/tutorial/response-status-code/image02.png">

/// note | Technical Details

You could also use `from starlette import status`.

Para eso, usas `app.add_middleware()` (como en el ejemplo para CORS).

```Python
from fastapi import FastAPI
from unicorn import UnicornMiddleware

app = FastAPI()

app.add_middleware(UnicornMiddleware, some_config="rainbow")
```

from fastapi import FastAPI
from fastapi.responses import FileResponse

some_file_path = "large-video-file.mp4"
app = FastAPI()


@app.get("/", response_class=FileResponse)
async def main():

from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/items/")
async def read_items(q: Union[str, None] = None):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

import json
from typing import Annotated, Any, Optional

from annotated_doc import Doc
from fastapi.encoders import jsonable_encoder
from starlette.responses import HTMLResponse

swagger_ui_default_parameters: Annotated[
    dict[str, Any],
    Doc(
        """
        Default configurations for Swagger UI.

        You can use it as a template to add any other configurations needed.
        """
    ),
] = {

import logging
import secrets
import subprocess
import time
from collections import Counter
from collections.abc import Container
from datetime import datetime, timedelta, timezone
from pathlib import Path
from typing import Any, Union

import httpx
import yaml
from github import Github
from pydantic import BaseModel, SecretStr
from pydantic_settings import BaseSettings

github_graphql_url = "https://api.github.com/graphql"

import asyncio

from fastapi.testclient import TestClient

from docs_src.path_params.tutorial003b_py39 import app, read_users2

client = TestClient(app)


def test_get_users():
    response = client.get("/users")
    assert response.status_code == 200, response.text
    assert response.json() == ["Rick", "Morty"]


def test_read_users2():  # Just for coverage
    assert asyncio.run(read_users2()) == ["Bean", "Elfo"]

    }

    /**
     * Extracts role type information from SMB (Server Message Block) response data.
     * Processes both SMB and SMB1 protocols to extract allowed and denied SIDs.
     *
     * @param responseData the response data containing SMB metadata
     * @return a list of role type strings extracted from the SMB permissions
     */

SAM Conversions
---------------

When you use Java APIs from Kotlin you can operate on Java interfaces as if they were Kotlin
lambdas. The [feature][java_sams] is available for interfaces that define a Single Abstract Method
(SAM).

But when you use Kotlin APIs from Kotlin there’s no automatic conversion. Code that used SAM lambdas
with OkHttp 3.x: must use `object :` with OkHttp 4.x:

                // Don't want to have two workers pulling from the queue.
                return;
              } else {
                // Increment the run counter to avoid the ABA problem of a submitter marking the
                // thread as QUEUED after it already ran and exhausted the queue before returning
                // from execute().
                workerRunCount++;