/// tip | "Tipp"

Einige Editoren prüfen, ob Funktionsparameter nicht verwendet werden, und zeigen das als Fehler an.

Wenn Sie `dependencies` im *Pfadoperation-Dekorator* verwenden, stellen Sie sicher, dass sie ausgeführt werden, während gleichzeitig Ihr Editor/Ihre Tools keine Fehlermeldungen ausgeben.

/// tip

Some editors check for unused function parameters, and show them as errors.

Using these `dependencies` in the *path operation decorator* you can make sure they are executed while avoiding editor/tooling errors.

  internal fun completeEdit(
    editor: Editor,
    success: Boolean,
  ) {
    val entry = editor.entry
    check(entry.currentEditor == editor)

    // If this edit is creating the entry for the first time, every index must have a value.
    if (success && !entry.readable) {
      for (i in 0 until valueCount) {
        if (!editor.written!![i]) {
          editor.abort()

///

Door dat te doen, kan je editor ondersteuning bieden, zelfs tijdens het verwerken van items uit de list:

<img src="/img/python-types/image05.png">

Zonder types is dat bijna onmogelijk om te bereiken.

Merk op dat de variabele `item` een van de elementen is in de lijst `items`.

Toch weet de editor dat het een `str` is, en biedt daar vervolgens ondersteuning voor aan.

Dokümantasyona tekrardan çok nadir olarak geleceksin.

Editörün sana nasıl yardım ettiğine bir bak:

* <a href="https://code.visualstudio.com/" class="external-link" target="_blank">Visual Studio Code</a> ile:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

* <a href="https://www.jetbrains.com/pycharm/" class="external-link" target="_blank">PyCharm</a> ile:

```Python hl_lines="1  4"
{!../../docs_src/python_types/tutorial009.py!}
```

`str` yerine `Optional[str]` kullanmak editorün bu değerin her zaman `str` tipinde değil bazen `None` tipinde de olabileceğini belirtir ve hataları tespit etmemizde yardımcı olur.

#### Generic tipler

Köşeli parantez içinde tip parametreleri alan bu türler, örneğin:

Je hoeft zelden terug te vallen op de documentatie.

Zo kan je editor je helpen:

* in <a href="https://code.visualstudio.com/" class="external-link" target="_blank">Visual Studio Code</a>:

![editor ondersteuning](https://fastapi.tiangolo.com/img/vscode-completion.png)

* in <a href="https://www.jetbrains.com/pycharm/" class="external-link" target="_blank">PyCharm</a>:

![editor ondersteuning](https://fastapi.tiangolo.com/img/pycharm-completion.png)

<span style="color: green;">INFO</span>:     Application startup complete.
```

</div>

Se **RECOMIENDA** que escribas o copies el código, lo edites y lo ejecutes localmente.

Usarlo en tu editor de código es lo que realmente te muestra los beneficios de FastAPI, al ver la poca cantidad de código que tienes que escribir, todas las verificaciones de tipo, auto-completado, etc.

---

## Tasarım

Sonrasında, (**FastAPI** kullanan bir geliştirici olarak) sahip olmak istediğim "API"ı tasarlamak için biraz zaman harcadım.

Çeşitli fikirleri en popüler Python editörlerinde test ettim: PyCharm, VS Code, Jedi tabanlı editörler.

Ich habe mehrere Ideen in den beliebtesten Python-Editoren getestet: PyCharm, VS Code, Jedi-basierte Editoren.

Laut der letzten <a href="https://www.jetbrains.com/research/python-developers-survey-2018/#development-tools" class="external-link" target="_blank">Python-Entwickler-Umfrage</a>, deckt das etwa 80 % der Benutzer ab.