**Spoiler alert**: туторіал - посібник користувача містить:

* Оголошення **параметрів** з інших місць як: **headers**, **cookies**, **form fields** та **files**.
* Як встановити **перевірку обмежень** як `maximum_length` або `regex`.

    * les cookies.
    * <abbr title="en anglais : headers">les en-têtes</abbr>.
    * <abbr title="en anglais : forms">les formulaires</abbr>.
    * <abbr title="en anglais : files">les fichiers</abbr>.

Each section gradually builds on the previous ones, but it's structured to separate topics, so that you can go directly to any specific one to solve your specific API needs.

It is also built to work as a future reference.

So you can come back and see exactly what you need.

## Run the code

All the code blocks can be copied and used directly (they are actually tested Python files).

# How To - Recipes

Here you will see different recipes or "how to" guides for **several topics**.

Most of these ideas would be more or less **independent**, and in most cases you should only need to study them if they apply directly to **your project**.

If something seems interesting and useful to your project, go ahead and check it, but otherwise, you might probably just skip them.

!!! tip

**Spoiler alert**: il tutorial - Guida Utente include:

* Dichiarazione di **parameters** da altri posti diversi come: **headers**, **cookies**, **form fields** e **files**.
* Come stabilire **vincoli di validazione** come `maximum_length` o `regex`.

    * JSON.
    * Path parameters.
    * Query parameters.
    * Cookies.
    * Headers.
    * Forms.
    * Files.
* <abbr title="also known as: serialization, parsing, marshalling">Conversion</abbr> of output data: converting from Python data and types to network data (as JSON):

    * <abbr title="Query parameters">پارامترهای پرسمان</abbr>.
    * <abbr title="Cookies">کوکی‌ها</abbr>.
    * <abbr title="Headers">سرآیند‌ها (هدرها)</abbr>.
    * <abbr title="Forms">فرم‌ها</abbr>.
    * <abbr title="Files">فایل‌ها</abbr>.
* <abbr title="serialization, parsing, marshalling">تبدیل</abbr> داده خروجی: تبدیل از انواع و داده‌ پایتون به داده شبکه  (مانند JSON):
    * تبدیل انواع داده پایتونی (`str`, `int`, `float`, `bool`, `list` و غیره).

    * JSON.
    * Các tham số trong đường dẫn.
    * Các tham số trong query string.
    * Cookies.
    * Headers.
    * Forms.
    * Files.
* <abbr title="cũng được biết tới như: serialization, parsing, marshalling">Chuyển đổi</abbr> dữ liệu đầu ra: chuyển đổi từ kiểu dữ liệu Python sang dữ liệu network (như JSON):

## To `async` or not to `async`

As dependencies will also be called by **FastAPI** (the same as your *path operation functions*), the same rules apply while defining your functions.

You can use `async def` or normal `def`.