### ✍ 🔗, ⚖️ "☑"

➡️ 🥇 🎯 🔛 🔗.

⚫️ 🔢 👈 💪 ✊ 🌐 🎏 🔢 👈 *➡ 🛠️ 🔢* 💪 ✊:

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="8-11"
{!> ../../docs_src/dependencies/tutorial001.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="6-7"
{!> ../../docs_src/dependencies/tutorial001_py310.py!}
```

////

👈 ⚫️.

**2️⃣ ⏸**.

> Requests est l'un des packages Python les plus téléchargés de tous les temps

La façon dont vous l'utilisez est très simple. Par exemple, pour faire une requête `GET`, vous devez écrire :

```Python
response = requests.get("http://example.com/some/url")
```

En contrepartie l'API _des opérations de chemin_ de FastAPI pourrait ressembler à ceci :

```Python hl_lines="1"
@app.get("/some/url")
def read_url():

* **함수**: 는 "데코레이터" 아래에 있는 함수입니다 (`@app.get("/")` 아래).

```Python hl_lines="7"
{!../../docs_src/first_steps/tutorial001.py!}
```

이것은 파이썬 함수입니다.

URL "`/`"에 대한 `GET` 작동을 사용하는 요청을 받을 때마다 **FastAPI**에 의해 호출됩니다.

위의 예시에서 이 함수는 `async`(비동기) 함수입니다.

---

`async def`을 이용하는 대신 일반 함수로 정의할 수 있습니다:

```Python hl_lines="7"
{!../../docs_src/first_steps/tutorial003.py!}
```

    [`tf.dtypes`](https://www.tensorflow.org/versions/master/api_docs/python/tf/dtypes),
    [`tf.image`](https://www.tensorflow.org/versions/master/api_docs/python/tf/image),
    [`tf.io`](https://www.tensorflow.org/versions/master/api_docs/python/tf/io),
    [`tf.linalg`](https://www.tensorflow.org/versions/master/api_docs/python/tf/linalg),

And they send a request with a username `johndoe` and a password `love123`.

Then the Python code in your application would be equivalent to something like:

```Python
if "johndoe" == "stanleyjobson" and "love123" == "swordfish":
    ...
```

Tudo que precisamos fazer é manipular a requisição dentro de um bloco `try`/`except`:

```Python hl_lines="13  15"
{!../../docs_src/custom_request_and_route/tutorial002.py!}
```

Se uma exceção ocorrer, a instância `Request` ainda estará em escopo, então podemos ler e fazer uso do corpo da requisição ao lidar com o erro:

```Python hl_lines="16-18"
{!../../docs_src/custom_request_and_route/tutorial002.py!}
```

///

## 🔗 ❌ & 📨 💲

👆 💪 ⚙️ 🎏 🔗 *🔢* 👆 ⚙️ 🛎.

### 🔗 📄

👫 💪 📣 📨 📄 (💖 🎚) ⚖️ 🎏 🎧-🔗:

```Python hl_lines="6  11"
{!../../docs_src/dependencies/tutorial006.py!}
```

### 🤚 ⚠

👫 🔗 💪 `raise` ⚠, 🎏 😐 🔗:

```Python hl_lines="8  13"
{!../../docs_src/dependencies/tutorial006.py!}
```

### 📨 💲

& 👫 💪 📨 💲 ⚖️ 🚫, 💲 🏆 🚫 ⚙️.

## 🖼

📥 🖼 *➡ 🛠️* ⏮️ 🔢 ⚙️ 🔛 🆎.

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="1  3  12-16"
{!> ../../docs_src/extra_data_types/tutorial001.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="1  2  11-15"
{!> ../../docs_src/extra_data_types/tutorial001_py310.py!}
```

////

```

</div>


让我们看看每个选项的含义：

* `main:app`：这与 Uvicorn 使用的语法相同，`main` 表示名为"`main`"的 Python 模块，因此是文件 `main.py`。 `app` 是 **FastAPI** 应用程序的变量名称。
     * 你可以想象 `main:app` 相当于一个 Python `import` 语句，例如：

        ```Python
        from main import app
        ```

     * 因此，`main:app` 中的冒号相当于 `from main import app` 中的 Python `import` 部分。

* `--workers`：要使用的worker进程数量，每个进程将运行一个 Uvicorn worker进程，在本例中为 4 个worker进程。

## Rückblick, Schritt für Schritt

### Schritt 1: Importieren von `FastAPI`

```Python hl_lines="1"
{!../../docs_src/first_steps/tutorial001.py!}
```

`FastAPI` ist eine Python-Klasse, die die gesamte Funktionalität für Ihre API bereitstellt.

/// note | "Technische Details"

`FastAPI`  ist eine Klasse, die direkt von `Starlette` erbt.