scalar.svg...

Bu tanımlamayla birlikte, **FastAPI** size otomatik istek <abbr title="HTTP isteği ile birlikte gelen string'i Python verisine dönüştürme">"ayrıştırma"</abbr> özelliği sağlar.

///

## Veri Doğrulama

  avatarUrl: https://avatars.githubusercontent.com/u/53824764?u=db3d0cea2f5fab64d810113c5039a369699a2774&v=4
  url: https://github.com/timothy-jeong
gerry-sabar:
  login: gerry-sabar
  count: 3
  avatarUrl: https://avatars.githubusercontent.com/u/1120123?v=4
  url: https://github.com/gerry-sabar
Rishat-F:
  login: Rishat-F
  count: 3
  avatarUrl: https://avatars.githubusercontent.com/u/66554797?v=4
  url: https://github.com/Rishat-F

    url: https://github.com/requestly
  - login: acsone
    avatarUrl: https://avatars.githubusercontent.com/u/7601056?v=4
    url: https://github.com/acsone
- - login: scalar
    avatarUrl: https://avatars.githubusercontent.com/u/301879?v=4
    url: https://github.com/scalar
  - login: Trivie
    avatarUrl: https://avatars.githubusercontent.com/u/8161763?v=4
    url: https://github.com/Trivie
- - login: takashi-yoneya

4. Instale as dependências de pacote vindas do arquivo de requisitos.

    A opção `--no-cache-dir` diz ao `pip` para não salvar os pacotes baixados localmente, pois isso só aconteceria se `pip` fosse executado novamente para instalar os mesmos pacotes, mas esse não é o caso quando trabalhamos com contêineres.

    /// note | Nota

<a href="https://github.com/scalar/scalar/?utm_source=fastapi&utm_medium=website&utm_campaign=main-badge" target="_blank" title="Scalar: Beautiful Open-Source API References from Swagger/OpenAPI files"><img src="https://fastapi.tiangolo.com/img/sponsors/scalar.svg"></a>

- name: langserve
  html_url: https://github.com/langchain-ai/langserve
  stars: 2215
  owner_login: langchain-ai
  owner_html_url: https://github.com/langchain-ai
- name: solara
  html_url: https://github.com/widgetti/solara
  stars: 2122
  owner_login: widgetti
  owner_html_url: https://github.com/widgetti
- name: mangum
  html_url: https://github.com/Kludex/mangum
  stars: 2029
  owner_login: Kludex

Neste ponto temos os dados do usuário do nosso banco de dados, mas não verificamos a senha.

Vamos colocar esses dados primeiro no modelo `UserInDB` do Pydantic.

Você nunca deve salvar senhas em texto simples, portanto, usaremos o sistema de hashing de senhas (falsas).

Se as senhas não corresponderem, retornaremos o mesmo erro.

#### Hashing de senha { #password-hashing }

Then with `random.choice()` we can get a **random value** from the list, so, we get a tuple with `(id, name)`. It will be something like `("imdb-tt0371724", "The Hitchhiker's Guide to the Galaxy")`.

Then we **assign those two values** of the tuple to the variables `id` and `name`.

So, if the user didn't provide an item ID, they will still receive a random suggestion.

You can use **type annotations** the same way you would for input data in function **parameters**, you can use Pydantic models, lists, dictionaries, scalar values like integers, booleans, etc.

{* ../../docs_src/response_model/tutorial001_01_py310.py hl[16,21] *}

FastAPI will use this return type to:

* **Validate** the returned data.