Это единая точка входа для создания и взаимодействия с API.

Именно к этой переменной `app` обращается `uvicorn` в команде:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Если создать такое приложение:

Żeby wykonać każdy przykład skopiuj kod to pliku `main.py` i uruchom `uvicorn` za pomocą:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
<span style="color: green;">INFO</span>:     Started reloader process [28720]

Ce sera le point principal d'interaction pour créer toute votre API.

Cette `app` est la même que celle à laquelle fait référence `uvicorn` dans la commande :

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Si vous créez votre app avec :

Untuk menjalankan setiap contoh, salin kode ke file `main.py`, dan jalankan `uvicorn` dengan:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
<span style="color: green;">INFO</span>:     Started reloader process [28720]

Özellikle, (diğer birçok araç arasında) Uvicorn, Starlette ve FastAPI'ın birlikte karşılaştırıldığını görebilirsiniz.

Aracın çözdüğü problem ne kadar basitse, performansı o kadar iyi olacaktır. Ancak kıyaslamaların çoğu, aracın sağladığı ek özellikleri test etmez.

Hiyerarşi şöyledir:

* **Uvicorn**: bir ASGI sunucusu
    * **Starlette**: (Uvicorn'u kullanır) bir web mikroframeworkü

# 🛠️

👆 💪 🔗 🕹 👆 👨‍🎨, 🖼 ⏮️ 🎙 🎙 📟 ⚖️ 🗒.

## 🤙 `uvicorn`

👆 FastAPI 🈸, 🗄 & 🏃 `uvicorn` 🔗:

{* ../../docs_src/debugging/tutorial001.py hl[1,15] *}

### 🔃 `__name__ == "__main__"`

👑 🎯 `__name__ == "__main__"` ✔️ 📟 👈 🛠️ 🕐❔ 👆 📁 🤙 ⏮️:

<div class="termy">

```console
$ python myapp.py
```

</div>

✋️ 🚫 🤙 🕐❔ ➕1️⃣ 📁 🗄 ⚫️, 💖:

```Python
from myapp import app
```

Pour exécuter l'un de ces exemples, copiez le code dans un fichier `main.py`, et commencez `uvicorn` avec :

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
<span style="color: green;">INFO</span>:     Started reloader process [28720]

# Depuração

Você pode conectar o depurador no seu editor, por exemplo, com o Visual Studio Code ou PyCharm.

## Chamar `uvicorn`

Em seu aplicativo FastAPI, importe e execute `uvicorn` diretamente:

{* ../../docs_src/debugging/tutorial001.py hl[1,15] *}

### Sobre `__name__ == "__main__"`

O objetivo principal de `__name__ == "__main__"` é ter algum código que seja executado quando seu arquivo for chamado com:

<div class="termy">

//// tab | Uvicorn

* <a href="https://www.uvicorn.org/" class="external-link" target="_blank">Uvicorn</a>, очень быстрый ASGI сервер, основанный на библиотеках uvloop и httptools.

<div class="termy">

```console
$ pip install "uvicorn[standard]"

---> 100%
```

</div>

/// tip | Подсказка

    * Se você quer fazer comparações com o Uvicorn, compare com Daphne, Hypercorn, uWSGI, etc. Servidores de Aplicação.
* **Starlette**:
    * Terá a melhor performance, depois do Uvicorn. De fato, Starlette utiliza Uvicorn para rodar. Então, ele provavelmente será "mais lento" que Uvicorn por ter que executar mais código.