```

<details markdown="1">
<summary>Або використайте <code>async def</code>...</summary>

Якщо ваш код використовує `async` / `await`, скористайтеся `async def`:

```Python hl_lines="9  14"
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")

```Python hl_lines="3 5"
{
"name": "Bar",
"description": "The bartenders",
"price": 62,
"tax": 20.2
}
```

eles serão incluídos na resposta.

#### Dados com os mesmos valores que os padrões

Se os dados tiverem os mesmos valores que os padrões, como o item com ID `baz`:

```Python hl_lines="3 5-6"
{
"name": "Baz",
"description": None,

```Python hl_lines="1"
async def get_burgers(number: int):
    # Hacer algunas cosas asíncronas para crear las hamburguesas
    return burgers
```

...en lugar de `def`:

```Python hl_lines="2"
# Esto no es asíncrono
def get_sequential_burgers(number: int):

///

Les réponses générées au format OpenAPI pour cette *opération de chemin* seront :

```JSON hl_lines="3-12"
{
    "responses": {
        "404": {
            "description": "Additional Response",
            "content": {
                "application/json": {
                    "schema": {

`await` 👷, ⚫️ ✔️ 🔘 🔢 👈 🐕‍🦺 👉 🔀. 👈, 👆 📣 ⚫️ ⏮️ `async def`:

```Python hl_lines="1"
async def get_burgers(number: int):
    # Do some asynchronous stuff to create the burgers
    return burgers
```

...↩️ `def`:

```Python hl_lines="2"
# This is not asynchronous
def get_sequential_burgers(number: int):
    # Do some sequential stuff to create the burgers

///

The docs UI would also need the OpenAPI schema to declare that this API `server` is located at `/api/v1` (behind the proxy). For example:

```JSON hl_lines="4-8"
{
    "openapi": "3.1.0",
    // More stuff here
    "servers": [
        {
            "url": "/api/v1"
        }
    ],
    "paths": {
            // More stuff here
    }
}

///

Die generierten Responses in der OpenAPI für diese *Pfadoperation* lauten:

```JSON hl_lines="3-12"
{
    "responses": {
        "404": {
            "description": "Additional Response",
            "content": {
                "application/json": {
                    "schema": {

///

Los responses generadas en el OpenAPI para esta *path operation* serán:

```JSON hl_lines="3-12"
{
    "responses": {
        "404": {
            "description": "Additional Response",
            "content": {
                "application/json": {
                    "schema": {

然後，使用 `async def` 宣告你的*路徑操作函式*：


```Python hl_lines="2"
@app.get('/')
async def read_results():
    results = await some_library()
    return results
```

/// note | 注意

你只能在 `async def` 建立的函式內使用 `await`。

///

---

如果你使用的是第三方函式庫並且它需要與某些外部資源（例如資料庫、API、檔案系統等）進行通訊，但不支援 `await`（目前大多數資料庫函式庫都是這樣），在這種情況下，你可以像平常一樣使用 `def` 宣告*路徑操作函式*，如下所示：

```Python hl_lines="2"
@app.get('/')
def results():

```

</div>

#### 🏗 👩‍💻 📟

🏗 👩‍💻 📟 👆 💪 ⚙️ 📋 ⏸ 🈸 `openapi-ts` 👈 🔜 🔜 ❎.

↩️ ⚫️ ❎ 🇧🇿 🏗, 👆 🎲 🚫🔜 💪 🤙 👈 📋 🔗, ✋️ 👆 🔜 🚮 ⚫️ 🔛 👆 `package.json` 📁.

⚫️ 💪 👀 💖 👉:

```JSON  hl_lines="7"
{
  "name": "frontend-app",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {