* closely related, e.g. see <a href="http://en.wikipedia.org/wiki/Little%27s_law">Little's
 * Law</a>).
 *
 * <p>A {@code RateLimiter} is defined primarily by the rate at which permits are issued. Absent
 * additional configuration, permits will be distributed at a fixed rate, defined in terms of
 * permits per second. Permits will be distributed smoothly, with the delay between individual

  // +patchMergeKey=type
  // +patchStrategy=merge
  // +listType=map
  // +listMapKey=type
  // +optional
  repeated HorizontalPodAutoscalerCondition conditions = 6;
}

// MetricIdentifier defines the name and optionally selector for a metric
message MetricIdentifier {
  // name is the name of the given metric
  optional string name = 1;

Das `Union` in `Union[str, None]` wird von FastAPI nicht verwendet, aber es erlaubt Ihrem Editor, Sie besser zu unterstützen und Fehler zu erkennen.

///

## Ohne Pydantic

Aynı hata <a href="http://127.0.0.1:8000/items/4.2" class="external-link" target="_blank">http://127.0.0.1:8000/items/4.2</a> sayfasında olduğu gibi `int` yerine `float` bir değer verseydik de ortaya çıkardı.

/// check | "Ek bilgi"

Böylece, aynı Python tip tanımlaması ile birlikte, **FastAPI** veri doğrulama özelliği sağlar.

 * "numbers") into two sections; this can be done below a certain value, above a certain value,
 * below all values or above all values. With this object defined in this way, an interval can
 * always be represented by a pair of {@code Cut} instances.
 *
 * @author Kevin Bourrillion
 */
@SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
@GwtCompatible

{!../../docs_src/first_steps/tutorial001.py!}
```

C'est une fonction Python.

Elle sera appelée par **FastAPI** quand une requête sur l'URL `/` sera reçue via une opération `GET`.

Ici, c'est une fonction asynchrone (définie avec `async def`).

---

Vous pourriez aussi la définir comme une fonction classique plutôt qu'avec `async def` :

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

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

   | value of '1.4' might activate a profile when the build is executed on a JDK version of '1.4.2_07'.
   | Finally, the list of active profiles can be specified directly from the command line.
   |
   | NOTE: For profiles defined in the settings.xml, you are restricted to specifying only artifact
   |       repositories, plugin repositories, and free-form properties to be used as configuration
   |       variables for plugins in the POM.
   |
   |-->

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

   * cell views, as returned by {@link #cellSet}, are equal.
   */
  @Override
  boolean equals(@CheckForNull Object obj);

  /**
   * Returns the hash code for this table. The hash code of a table is defined as the hash code of
   * its cell view, as returned by {@link #cellSet}.
   */
  @Override
  int hashCode();

  // Mutators

  /** Removes all mappings from the table. */
  void clear();