<a href="https://docs.railway.com/guides/fastapi?utm_medium=integration&utm_source=docs&utm_campaign=fastapi" target="_blank" title="Deploy enterprise applications at startup speed"><img src="https://fastapi.tiangolo.com/img/sponsors/railway.png"></a>

    "typing-extensions>=4.8.0",
    "annotated-doc>=0.0.2",
]

[project.urls]
Homepage = "https://github.com/fastapi/fastapi"
Documentation = "https://fastapi.tiangolo.com/"
Repository = "https://github.com/fastapi/fastapi"
Issues = "https://github.com/fastapi/fastapi/issues"
Changelog = "https://fastapi.tiangolo.com/release-notes/"

[project.optional-dependencies]

standard = [
    "fastapi-cli[standard] >=0.0.8",

            "servers": [
                {"url": "/api/v1"},
                {
                    "url": "https://stag.example.com",
                    "description": "Staging environment",
                },
                {
                    "url": "https://prod.example.com",
                    "description": "Production environment",
                },
            ],
            "paths": {

        json={
            "username": "foo",
            "password": "fighter",
            "email": "foo@example.com",
            "full_name": "Grave Dohl",
        },
    )
    assert response.status_code == 200, response.text
    assert response.json() == {
        "username": "foo",
        "email": "foo@example.com",
        "full_name": "Grave Dohl",
    }


def test_openapi_schema(client: TestClient):

</a>
</p>

---

**Dokumentation**: <a href="https://fastapi.tiangolo.com/de" target="_blank">https://fastapi.tiangolo.com/de</a>

**Quellcode**: <a href="https://github.com/fastapi/fastapi" target="_blank">https://github.com/fastapi/fastapi</a>

---

* 🔧 Update sponsors: add Greptile. PR [#14429](https://github.com/fastapi/fastapi/pull/14429) by [@tiangolo](https://github.com/tiangolo).
* 👥 Update FastAPI GitHub topic repositories. PR [#14426](https://github.com/fastapi/fastapi/pull/14426) by [@tiangolo](https://github.com/tiangolo).

                Read more about it in the
                [FastAPI docs for Additional Responses in OpenAPI](https://fastapi.tiangolo.com/advanced/additional-responses/).

                And in the
                [FastAPI docs for Bigger Applications](https://fastapi.tiangolo.com/tutorial/bigger-applications/#include-an-apirouter-with-a-custom-prefix-tags-responses-and-dependencies).
                """
            ),

    assert response.status_code == 200, response.text
    assert response.json() == {
        "username": "testtokenfakedecoded",
        "email": "john@example.com",
        "full_name": "John Doe",
        "disabled": None,
    }


def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text

Então, mesmo com o código acima que não usa Pydantic explicitamente, o FastAPI está usando Pydantic para converter essas dataclasses padrão para a versão do Pydantic.

E claro, ele suporta o mesmo:

* validação de dados
* serialização de dados
* documentação de dados, etc.

    This is for client errors, invalid authentication, invalid data, etc. Not for server
    errors in your code.

    Read more about it in the
    [FastAPI docs for Handling Errors](https://fastapi.tiangolo.com/tutorial/handling-errors/).

    ## Example

    ```python
    from fastapi import FastAPI, HTTPException

    app = FastAPI()

    items = {"foo": "The Foo Wrestlers"}