Now you can import and use the client code. It could look like this, notice that you get autocompletion for the methods:

<img src="/img/tutorial/generate-clients/image02.png">

You will also get autocompletion for the payload to send:

<img src="/img/tutorial/generate-clients/image03.png">

/// tip

Notice the autocompletion for `name` and `price`, that was defined in the FastAPI application, in the `Item` model.

///

    typer.secho(f"Successfully initialized: {new_path}", color=typer.colors.GREEN)
    update_languages()


@app.command()
def build_lang(
    lang: str = typer.Argument(
        ..., callback=lang_callback, autocompletion=complete_existing_lang
    ),
) -> None:
    """
    Build the docs for a language.
    """
    lang_path: Path = Path("docs") / lang
    if not lang_path.is_dir():

* **Менше помилок**: Зменшить кількість помилок спричинених людиною (розробником) на 40%. *
* **Інтуїтивний**: Чудова підтримка редакторами коду. <abbr title="Також відоме як auto-complete, autocompletion, IntelliSense.">Доповнення</abbr> всюди. Зменште час на налагодження.
* **Простий**: Спроектований, для легкого використання та навчання. Знадобиться менше часу на читання документації.

But you can also use <a href="https://typer.tiangolo.com/typer-cli/" class="external-link" target="_blank">Typer CLI</a>, and you will get autocompletion in your terminal for the commands after installing completion.

If you install Typer CLI, you can install completion with:

<div class="termy">

```console
$ typer --install-completion

But then you have to call "that method that converts the first letter to upper case".

Was it `upper`? Was it `uppercase`? `first_uppercase`? `capitalize`?

Then, you try with the old programmer's friend, editor autocompletion.

You type the first parameter of the function, `first_name`, then a dot (`.`) and then hit `Ctrl+Space` to trigger the completion.

But, sadly, you get nothing useful:

<img src="/img/python-types/image01.png">

* **Daha az hata**: İnsan (geliştirici) kaynaklı hataları yaklaşık %40 azaltır. *
* **Sezgisel**: Muhteşem bir editör desteği. Her yerde <abbr title="Otomatik Tamamlama: auto-complete, autocompletion, IntelliSense">otomatik tamamlama</abbr>. Hata ayıklama ile daha az zaman harcayacaksınız.
* **Kolay**: Öğrenmesi ve kullanması kolay olacak şekilde tasarlandı. Doküman okuma ile daha az zaman harcayacaksınız.

- **高速なコーディング**: 開発速度を約 200%~300%向上させます。 \*
- **少ないバグ**: 開発者起因のヒューマンエラーを約 40％削減します。 \*
- **直感的**: 素晴らしいエディタのサポートや <abbr title="also known as auto-complete, autocompletion, IntelliSense">オートコンプリート。</abbr> デバッグ時間を削減します。
- **簡単**: 簡単に利用、習得できるようにデザインされています。ドキュメントを読む時間を削減します。
- **短い**: コードの重複を最小限にしています。各パラメータからの複数の機能。少ないバグ。
- **堅牢性**: 自動対話ドキュメントを使用して、本番環境で使用できるコードを取得します。

* **빠른 코드 작성**: 약 200%에서 300%까지 기능 개발 속도 증가. *
* **적은 버그**: 사람(개발자)에 의한 에러 약 40% 감소. *
* **직관적**: 훌륭한 편집기 지원. 모든 곳에서 <abbr title="also known as auto-complete, autocompletion, IntelliSense">자동완성</abbr>. 적은 디버깅 시간.
* **쉬움**: 쉽게 사용하고 배우도록 설계. 적은 문서 읽기 시간.
* **짧음**: 코드 중복 최소화. 각 매개변수 선언의 여러 기능. 적은 버그.
* **견고함**: 준비된 프로덕션 용 코드를 얻으십시오. 자동 대화형 문서와 함께.

</div>

## Configure Your Editor { #configure-your-editor }

You would probably use an editor, make sure you configure it to use the same virtual environment you created (it will probably autodetect it) so that you can get autocompletion and inline errors.

For example:

* <a href="https://code.visualstudio.com/docs/python/environments#_select-and-activate-an-environment" class="external-link" target="_blank">VS Code</a>

* **Fewer bugs**: Reduce about 40% of human (developer) induced errors. *
* **Intuitive**: Great editor support. <abbr title="also known as auto-complete, autocompletion, IntelliSense">Completion</abbr> everywhere. Less time debugging.
* **Easy**: Designed to be easy to use and learn. Less time reading docs.