Trong trường hợp này, nó là một hàm `async`.

---

Bạn cũng có thể định nghĩa nó như là một hàm thông thường thay cho `async def`:

{* ../../docs_src/first_steps/tutorial003.py hl[7] *}

/// note

Nếu bạn không biết sự khác nhau, kiểm tra [Async: *"Trong khi vội vàng?"*](../async.md#in-a-hurry){.internal-link target=_blank}.

///

   * | :--------------------- | :----------- |
   * | `http://host/`         | null         |
   * | `http://host/#`        | `""`         |
   * | `http://host/#abc`     | `"abc"`      |
   * | `http://host/#abc|def` | `"abc|def"`  |
   */
  @get:JvmName("fragment") val fragment: String?,
  /** Canonical URL. */
  private val url: String,
) {
  val isHttps: Boolean
    get() = scheme == "https"

```Python
Settings()
```

se crearía un nuevo objeto `Settings`, y al crearse leería el archivo `.env` nuevamente.

Si la función de dependencia fuera simplemente así:

```Python
def get_settings():
    return Settings()
```

crearíamos ese objeto para cada request, y estaríamos leyendo el archivo `.env` para cada request. ⚠️

    clientListener.assertOpen()
    val server = serverListener.assertOpen()
    webSocket.send("abc")
    serverListener.assertTextMessage("abc")
    server.send("def")
    clientListener.assertTextMessage("def")
    closeWebSockets(webSocket, server)
  }

  @Test
  @Throws(IOException::class)
  fun missingConnectionHeader() {
    webServer.enqueue(
      MockResponse

```

⚖️

```Python
something(some_argument, some_keyword_argument="foo")
```

⤴️ ⚫️ "🇧🇲".

## 🎓 🔗

👆 5️⃣📆 👀 👈 ✍ 👐 🐍 🎓, 👆 ⚙️ 👈 🎏 ❕.

🖼:

```Python
class Cat:
    def __init__(self, name: str):
        self.name = name


fluffy = Cat(name="Mr Fluffy")
```

👉 💼, `fluffy` 👐 🎓 `Cat`.

& ✍ `fluffy`, 👆 "🤙" `Cat`.

, 🐍 🎓 **🇧🇲**.

✋️ 🔠 🕰 👥:

```Python
Settings()
```

🆕 `Settings` 🎚 🔜 ✍, & 🏗 ⚫️ 🔜 ✍ `.env` 📁 🔄.

🚥 🔗 🔢 💖:

```Python
def get_settings():
    return Settings()
```

👥 🔜 ✍ 👈 🎚 🔠 📨, & 👥 🔜 👂 `.env` 📁 🔠 📨. 👶 👶

✋️ 👥 ⚙️ `@lru_cache` 👨‍🎨 🔛 🔝, `Settings` 🎚 🔜 ✍ 🕴 🕐, 🥇 🕰 ⚫️ 🤙. 👶 👶

高度なシナリオでは、「キャッシュされた」値を使うのではなく、同じリクエストの各ステップ（おそらく複数回）で依存関係を呼び出す必要があることがわかっている場合、`Depens`を使用する際に、`use_cache=False`というパラメータを設定することができます。

```Python hl_lines="1"
async def needy_dependency(fresh_value: str = Depends(get_value, use_cache=False)):
    return {"fresh_value": fresh_value}
```

## まとめ

ここで使われている派手な言葉は別にして、**依存性注入** システムは非常にシンプルです。

*path operation関数*と同じように見えるただの関数です。

    # - - - - - - - - - -/

    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o isCheckColumnDefOrderDiff: (NotRequired - Default false)
    #  Does it check differences of column-def order?
    #  (except added or deleted columns)
    #
    #; isCheckColumnDefOrderDiff = false
    # - - - - - - - - - -/

    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

pip install flask requests
```

Following is an example lambda handler.
```py
from flask import Flask, request, abort, make_response
import requests

app = Flask(__name__)
@app.route('/', methods=['POST'])
def get_webhook():
	if request.method == 'POST':
		# obtain the request event from the 'POST' call
		event = request.json

		object_context = event["getObjectContext"]

		# Get the presigned URL to fetch the requested

_site_packages_dirs = list(set(_site_packages_dirs))

# Find the location of this exact file.
_current_file_location = _inspect.getfile(_inspect.currentframe())

def _running_from_pip_package():
  return any(
      _current_file_location.startswith(dir_) for dir_ in _site_packages_dirs)

if _running_from_pip_package():
  # TODO(gunan): Add sanity checks to loaded modules here.