# Tutorial - Guía de Usuario

Este tutorial te muestra cómo usar **FastAPI** con la mayoría de sus características paso a paso.

Cada sección se basa gradualmente en las anteriores, pero está estructurada en temas separados, así puedes ir directamente a cualquier tema en concreto para resolver tus necesidades específicas sobre la API.

Funciona también como una referencia futura, para que puedas volver y ver exactamente lo que necesitas.

## Ejecuta el código

```Python hl_lines="9"
{!../../docs_src/query_params/tutorial001.py!}
```

A consulta é o conjunto de pares chave-valor que vai depois de `?` na URL, separado pelo caractere `&`.

Por exemplo, na URL:

```
http://127.0.0.1:8000/items/?skip=0&limit=10
```

...os parâmetros da consulta são:

* `skip`: com o valor `0`
* `limit`: com o valor `10`

    WeakReference<?> classUsedByGetChecked = doTestClassUnloading();
    GcFinalization.awaitClear(classUsedByGetChecked);
  }

  /**
   * Loads {@link WillBeUnloadedException} in a separate {@code ClassLoader}, calls {@code
   * getChecked(future, WillBeUnloadedException.class)}, and returns the loader. The caller can then
   * test that the {@code ClassLoader} can still be GCed. The test amounts to a test that {@code

---> 100%
```

</div>

... das beinhaltet auch `uvicorn`, welchen Sie als Server verwenden können, der ihren Code ausführt.

/// note | "Hinweis"

Sie können die einzelnen Teile auch separat installieren.

Das folgende würden Sie wahrscheinlich tun, wenn Sie Ihre Anwendung in der Produktion einsetzen:

```
pip install fastapi
```

Installieren Sie auch `uvicorn` als Server:

```

	// The file mode to set when creating the kubeconfig file
	KubeconfigMode int
	// CA file for kubeconfig
	KubeCAFile string
	// Whether to use insecure TLS in the kubeconfig file
	SkipTLSVerify bool

	// Comma-separated list of K8S namespaces that CNI should ignore
	ExcludeNamespaces string

	// KUBERNETES_SERVICE_PROTOCOL
	K8sServiceProtocol string
	// KUBERNETES_SERVICE_HOST
	K8sServiceHost string
	// KUBERNETES_SERVICE_PORT

     * If not set, it will be inferred from the fields
     * annotated with the {@link Resolution} annotation.
     */
    @Nonnull
    boolean dependencyCollection() default false;

    /**
     * Comma separated list of path scopes that will be
     * required for dependency resolution.
     * If not set, it will be inferred from the fields
     * annotated with the {@link Resolution} annotation.
     */
    @Nonnull

	// container runtime prefixes, etc.
	regexp.MustCompile(`` +
		// "pod"-prefixed Pod UID (with punctuation separated groups) followed by punctuation
		`[[:punct:]]pod(?P<poduid>[[:xdigit:]]{8}[[:punct:]]?[[:xdigit:]]{4}[[:punct:]]?[[:xdigit:]]{4}[[:punct:]]?[[:xdigit:]]{4}[[:punct:]]?[[:xdigit:]]{12})[[:punct:]]` +
		// zero or more punctuation separated "segments" (e.g. "docker-")
		`(?:[[:^punct:]]+[[:punct:]])*` +

// An IP address can be represented in different formats, to guarantee the uniqueness of the IP,
// the name of the object is the IP address in canonical format, four decimal digits separated
// by dots suppressing leading zeros for IPv4 and the representation defined by RFC 5952 for IPv6.
// Valid: 192.168.1.5 or 2001:db8::1 or 2001:db8:aaaa:bbbb:cccc:dddd:eeee:1
// Invalid: 10.01.2.3 or 2001:db8:0:0:0::1

///

## Conversão automática

`Header` tem algumas funcionalidades a mais em relação a `Path`, `Query` e `Cookie`.

A maioria dos cabeçalhos padrão são separados pelo caractere "hífen", também conhecido como "sinal de menos" (`-`).

Mas uma variável como `user-agent` é inválida em Python.

 * challenges, we prefer to use the same physical connection for all streams in the sequence. There
 * are potential performance and behavior consequences to this preference. To support this feature,
 * this class separates _allocations_ from _streams_. An allocation is created by a call, used for
 * one or more streams, and then released. An allocated connection won't be stolen by other calls