You can override these exception handlers with your own.

### Override request validation exceptions

When a request contains invalid data, **FastAPI** internally raises a `RequestValidationError`.

And it also includes a default exception handler for it.

To override it, import the `RequestValidationError` and use it with `@app.exception_handler(RequestValidationError)` to decorate the exception handler.

All built as reusable tools and components that are easy to integrate with your systems, data stores, relational and NoSQL databases, etc.

### Dependency Injection

FastAPI includes an extremely easy to use, but extremely powerful <abbr title='also known as "components", "resources", "services", "providers"'><strong>Dependency Injection</strong></abbr> system.

* `docs`: Docs
    * Changes in docs. This includes updating the docs, fixing typos. But it doesn't include changes to translations.

Se você passar algo "chamável" como uma dependência do **FastAPI**, o framework irá analisar os parâmetros desse "chamável" e processá-los da mesma forma que os parâmetros de uma *função de operação de rota*. Incluindo as sub-dependências.

Isso também se aplica a objetos chamáveis que não recebem nenhum parâmetro. Da mesma forma que uma *função de operação de rota* sem parâmetros.

		for _, loader := range loaders {
			if err := loader(ctx, m, c, b); err != nil {
				return err
			}
		}
		return nil
	}
}

// MetricsGroup - represents a group of metrics. It includes a `MetricsLoaderFn`
// function that provides a way to load the metrics from the system. The metrics
// are cached and refreshed after a given timeout.
//

## Additional labels to include with deployment or statefulset
additionalLabels: {}

## Additional annotations to include with deployment or statefulset
additionalAnnotations: {}

## Typically the deployment/statefulset includes checksums of secrets/config,
## So that when these change on a subsequent helm install, the deployment/statefulset
## is restarted. This can result in unnecessary restarts under GitOps tooling such as

<img src="/img/tutorial/path-params/image02.png">

Da mesma forma, existem muitas ferramentas compatíveis. Incluindo ferramentas de geração de código para muitas linguagens.

## Pydantic

          attribution notices from the Source form of the Work,
          excluding those notices that do not pertain to any part of
          the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained

[Docker container](https://www.tensorflow.org/install/docker), and
[build from source](https://www.tensorflow.org/install/source).

To install the current release, which includes support for
[CUDA-enabled GPU cards](https://www.tensorflow.org/install/gpu) *(Ubuntu and
Windows)*:

```
$ pip install tensorflow
```

Other devices (DirectX and MacOS-metal) are supported using

Because all the **fields actually change** (the type now includes `None` and they now have a default value of `None`), we need to **re-declare** them.