## Import Couchbase components

For now, don't pay attention to the rest, only the imports:

```Python hl_lines="3-5"
{!../../../docs_src/nosql_databases/tutorial001.py!}
```

## Define a constant to use as a "document type"

We will use it later as a fixed field `type` in our documents.

This is not required by Couchbase, but is a good practice that will help you afterwards.

```Python hl_lines="9"

# Eventos de vida útil

Você pode definir a lógica (código) que poderia ser executada antes da aplicação **inicializar**. Isso significa que esse código será executado **uma vez**, **antes** da aplicação **começar a receber requisições**.

Do mesmo modo, você pode definir a lógica (código) que será executada quando a aplicação estiver sendo **encerrada**. Nesse caso, este código será executado **uma vez**, **depois** de ter possivelmente tratado **várias requisições**.

### OpenAPI support

OpenAPI doesn't support a way to declare a *path parameter* to contain a *path* inside, as that could lead to scenarios that are difficult to test and define.

Nevertheless, you can still do it in **FastAPI**, using one of the internal tools from Starlette.

And the docs would still work, although not adding any documentation telling that the parameter should contain a path.

## Singular values in body

The same way there is a `Query` and `Path` to define extra data for query and path parameters, **FastAPI** provides an equivalent `Body`.

For example, extending the previous model, you could decide that you want to have another key `importance` in the same body, besides the `item` and `user`.

```Python hl_lines="10"
{!../../../docs_src/query_params_str_validations/tutorial003.py!}
```

## Adicionando expressões regulares

Você pode definir uma <abbr title="Uma expressão regular, regex ou regexp é uma sequência de caracteres que define um parâmetro de busca para textos.">expressão regular</abbr> que combine com um padrão esperado pelo parâmetro:

```Python hl_lines="11"

Lifecycles Reference

  Maven defines 4 lifecycles in {{{./apidocs/org/apache/maven/lifecycle/providers/package-summary.html}<<<org.apache.maven.lifecycle.providers>>>}} package:

%{toc|fromDepth=2}

* <<<default>>> Lifecycle

  <<<default>>> lifecycle is defined only with phases, <<without>> any associated plugin binding:
  plugins bindings for this lifecycle are {{{./default-bindings.html}defined separately for each packaging}}:

istio-agent checks the presence of a socket file on the defined **socket path** `/var/run/secrets/workload-spiffe-uds/socket`.

* If a socket is found, istio-agent will not start its own SDS Server and Envoy will be configured to use that socket as its source of cryptographic material.

### Iterators

The new [`iter` package](/pkg/iter/) provides the basic definitions for

  // +optional
  map<string, k8s.io.apimachinery.pkg.api.resource.Quantity> podFixed = 1;
}

// RuntimeClass defines a class of container runtime supported in the cluster.
// The RuntimeClass is used to determine which container runtime is used to run
// all containers in a pod. RuntimeClasses are (currently) manually defined by a
// user or cluster provisioner, and referenced in the PodSpec. The Kubelet is

  </parent>
  <modelVersion>4.0.0</modelVersion>
  <artifactId>wagon-provider-api</artifactId>
  <name>Maven Wagon API</name>
  <version>1.0-beta-2</version>
  <description>Maven Wagon API that defines the contract between different Wagon implementations</description>
  <dependencies>
    <dependency>
      <groupId>org.codehaus.plexus</groupId>
      <artifactId>plexus-utils</artifactId>
    </dependency>