app = FastAPI()
router = APIRouter()


@router.get("/a", responses={501: {"description": "Error 1"}})
async def a():
    return "a"


@router.get(
    "/b",
    responses={
        502: {"description": "Error 2"},
        "4XX": {"description": "Error with range, upper"},
    },
)
async def b():
    return "b"


@router.get(
    "/c",
    responses={

from fastapi import Depends, FastAPI, Header, HTTPException
from typing_extensions import Annotated


async def verify_token(x_token: Annotated[str, Header()]):
    if x_token != "fake-super-secret-token":
        raise HTTPException(status_code=400, detail="X-Token header invalid")


async def verify_key(x_key: Annotated[str, Header()]):
    if x_key != "fake-super-secret-key":
        raise HTTPException(status_code=400, detail="X-Key header invalid")

		}
	}

	if opts.Users || opts.Entity == madmin.SRUserEntity {
		// Replicate policy mappings on local to all peers.
		userPolicyMap := xsync.NewMapOf[string, MappedPolicy]()
		stsPolicyMap := xsync.NewMapOf[string, MappedPolicy]()
		svcPolicyMap := xsync.NewMapOf[string, MappedPolicy]()
		if opts.Entity == madmin.SRUserEntity {
			if mp, ok := globalIAMSys.store.GetMappedPolicy(opts.EntityValue, false); ok {

8. Note que esta *função de operação de rota* usa `def` regular em vez de `async def`.

    Como sempre, no FastAPI você pode combinar `def` e `async def` conforme necessário.

    Se você precisar de uma atualização sobre quando usar qual, confira a seção _"Com pressa?"_ na documentação sobre [`async` e `await`](../async.md#in-a-hurry){.internal-link target=_blank}.

from fastapi import FastAPI
from fastapi.responses import StreamingResponse

app = FastAPI()


async def fake_video_streamer():
    for i in range(10):
        yield b"some fake video bytes"


@app.get("/")
async def main():

        swagger_css_url="/static/swagger-ui.css",
    )


@app.get(app.swagger_ui_oauth2_redirect_url, include_in_schema=False)
async def swagger_ui_redirect():
    return get_swagger_ui_oauth2_redirect_html()


@app.get("/redoc", include_in_schema=False)
async def redoc_html():
    return get_redoc_html(
        openapi_url=app.openapi_url,
        title=app.title + " - ReDoc",

const div = document.querySelector('.github-topic-projects')

async function getDataBatch(page) {
    const response = await fetch(`https://api.github.com/search/repositories?q=topic:fastapi&per_page=100&page=${page}`, { headers: { Accept: 'application/vnd.github.mercy-preview+json' } })
    const data = await response.json()
    return data
}

async function getData() {
    let page = 1
    let data = []
    let dataBatch = await getDataBatch(page)

package schema

import (
	"reflect"
	"sync"
)

// sync pools
var (
	normalPool      sync.Map
	poolInitializer = func(reflectType reflect.Type) FieldNewValuePool {
		v, _ := normalPool.LoadOrStore(reflectType, &sync.Pool{
			New: func() interface{} {
				return reflect.New(reflectType).Interface()
			},
		})
		return v.(FieldNewValuePool)
	}

* `close()`: 🔐 📁.

🌐 👫 👩‍🔬 `async` 👩‍🔬, 👆 💪 "⌛" 👫.

🖼, 🔘 `async` *➡ 🛠️ 🔢* 👆 💪 🤚 🎚 ⏮️:

```Python
contents = await myfile.read()
```

🚥 👆 🔘 😐 `def` *➡ 🛠️ 🔢*, 👆 💪 🔐 `UploadFile.file` 🔗, 🖼:

```Python
contents = myfile.file.read()
```

/// note | "`async` 📡 ℹ"

🕐❔ 👆 ⚙️ `async` 👩‍🔬, **FastAPI** 🏃 📁 👩‍🔬 🧵 & ⌛ 👫.

///

	github.com/pkg/xattr v0.4.10
	github.com/prometheus/client_golang v1.20.2
	github.com/prometheus/client_model v0.6.1
	github.com/prometheus/common v0.59.1
	github.com/prometheus/procfs v0.15.1
	github.com/puzpuzpuz/xsync/v3 v3.4.0
	github.com/rabbitmq/amqp091-go v1.10.0
	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475
	github.com/rs/cors v1.11.1
	github.com/secure-io/sio-go v0.3.1
	github.com/shirou/gopsutil/v3 v3.24.5