"<script>" +
                    "(function() {" +
                    "var mql = window.matchMedia('(prefers-color-scheme: dark)');" +
                    "var hljsEl = document.getElementById('hljs-theme');" +
                    "function applyTheme(dark) {" +
                    "var t = dark ? 'dark' : 'light';" +

```

Bunun nedeni, **OAuth2**’nin `username` ve `password` göndermek için "form data" kullanmasıdır.

///

Örneği şu şekilde çalıştırın:

<div class="termy">

```console
$ fastapi dev

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

</div>

## Kontrol Edin { #check-it }

<div align="center">
  <picture>
    <source media="(prefers-color-scheme: dark)" srcset="images/gradle-white-primary.png" width="600px">
    <img alt="Gradle Logo" src="images/gradle-dark-green-primary.png" width="600px">
  </picture>
</div>

<div align="center">
  <a href="https://ge.gradle.org/scans">
    <img src="https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A" alt="Revved up by Develocity">
  </a>

                "The error string should match the expected message for given error class and code");
    }

    /**
     * Provides arguments for the testGetErrorString parameterized test.
     * Covers all defined error classes and codes, including default cases.
     */
    private static Stream<Arguments> provideErrorClassAndCodeForGetErrorString() {
        return Stream.of(
                // SUCCESS

island","brazil","british indian ocean territory","brunei darussalam","bulgaria","burkina faso","burundi","cabo verde","cambodia","cameroon","canada","cayman islands","central african republic","chad","chile","china","christmas island","cocos islands","colombia","comoros","democratic republic of the congo","congo","cook islands","costa rica","côte d'ivoire","croatia","cuba","curaçao","cyprus","czechia","denmark","djibouti","dominica","dominican republic","ecuador","egypt","el salvador","equatorial g...

   * ("constant lists"). Example:
   *
   * {@snippet :
   * public static final ImmutableList<Color> GOOGLE_COLORS =
   *     new ImmutableList.Builder<Color>()
   *         .addAll(WEBSAFE_COLORS)
   *         .add(new Color(0, 191, 255))
   *         .build();
   * }
   *
   * <p>Elements appear in the resulting list in the same order they were added to the builder.
   *

```

This is because **OAuth2** uses "form data" for sending the `username` and `password`.

///

Run the example with:

<div class="termy">

```console
$ fastapi dev

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

</div>

## Check it { #check-it }

Go to the interactive docs at: [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

Parce que nous utilisons une URL relative, si votre API se trouvait à `https://example.com/`, alors elle ferait référence à `https://example.com/token`. Mais si votre API se trouvait à `https://example.com/api/v1/`, alors elle ferait référence à `https://example.com/api/v1/token`.

Das liegt daran, dass **OAuth2** „Formulardaten“ zum Senden von `username` und `password` verwendet.

///

Führen Sie das Beispiel aus mit:

<div class="termy">

```console
$ fastapi dev

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

</div>

## Es testen { #check-it }

</a>
<a href="https://pypi.org/project/fastapi">
    <img src="https://img.shields.io/pypi/v/fastapi?color=%2334D058&label=pypi%20package" alt="Версия пакета">
</a>
<a href="https://pypi.org/project/fastapi">
    <img src="https://img.shields.io/pypi/pyversions/fastapi.svg?color=%2334D058" alt="Поддерживаемые версии Python">
</a>
</p>

---