{* ../../docs_src/background_tasks/tutorial001_py39.py hl[1,13] *}

**FastAPI** creará el objeto de tipo `BackgroundTasks` por ti y lo pasará como ese parámetro.

## Crear una función de tarea { #create-a-task-function }

Crea una función para que se ejecute como la tarea en segundo plano.

Es solo una función estándar que puede recibir parámetros.

Then, when you type that username and password, the browser sends them in the header automatically.

## Simple HTTP Basic Auth { #simple-http-basic-auth }

* Import `HTTPBasic` and `HTTPBasicCredentials`.
* Create a "`security` scheme" using `HTTPBasic`.
* Use that `security` with a dependency in your *path operation*.
* It returns an object of type `HTTPBasicCredentials`:
    * It contains the `username` and `password` sent.

// Should only be called if a failure occurred.
func (o listPathOptions) checkMetacacheState(ctx context.Context, rpc *peerRESTClient) error {
	// We operate on a copy...
	o.Create = false
	c, err := rpc.GetMetacacheListing(ctx, o)
	if err != nil {
		return err
	}
	cache := *c

	if cache.status == scanStateNone || cache.fileNotFound {
		return errFileNotFound
	}

		respRecorder := xhttp.NewResponseRecorder(w)

		// Setup a http request body recorder
		reqRecorder := &xhttp.RequestRecorder{Reader: r.Body}
		r.Body = reqRecorder

		// Create tracing data structure and associate it to the request context
		tc := mcontext.TraceCtxt{
			AmzReqID:         w.Header().Get(xhttp.AmzRequestID),
			RequestRecorder:  reqRecorder,
			ResponseRecorder: respRecorder,
		}

      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>buildnumber-maven-plugin</artifactId>
        <executions>
          <execution>
            <id>create-buildnumber</id>
            <goals>
              <goal>create</goal>
            </goals>
            <configuration>
              <doCheck>false</doCheck>
              <doUpdate>false</doUpdate>

                mock(BuildResumptionDataRepository.class),
                pomlessCollectionStrategy,
                multiModuleCollectionStrategy,
                requestPomCollectionStrategy);

        // Create projects
        MavenProject projectParent = getMavenProject(PARENT_MODULE);
        MavenProject projectModuleD = getMavenProject(MODULE_D, projectParent, "bom");

Some of these solutions may also be open source or offer free tiers, so you can try them without a financial commitment. Other commercial SDK generators are available and can be found online. 🤓

## Create a TypeScript SDK { #create-a-typescript-sdk }

Let's start with a simple FastAPI application:

{* ../../docs_src/generate_clients/tutorial001_py39.py hl[7:9,12:13,16:17,21] *}

Swagger UI lo manejará detrás de escena para ti, pero necesita este auxiliar de "redirección".

///

### Crea una *path operation* para probarlo { #create-a-path-operation-to-test-it }

Ahora, para poder probar que todo funciona, crea una *path operation*:

{* ../../docs_src/custom_docs_ui/tutorial001_py39.py hl[36:38] *}

### Pruébalo { #test-it }

Swagger UI lidará com isso nos bastidores para você, mas ele precisa desse auxiliar de "redirecionamento".

///

### Criar uma *operação de rota* para testar { #create-a-path-operation-to-test-it }

Agora, para poder testar se tudo funciona, crie uma *operação de rota*:

{* ../../docs_src/custom_docs_ui/tutorial001_py39.py hl[36:38] *}

### Teste { #test-it }

    private record Key(MavenProject project, boolean transitive, boolean upstream) {}

    /**
     * Creates a new project dependency graph from the specified graph.
     *
     * @param projectDependencyGraph The project dependency graph to create a sub view from, must not be {@code null}.
     * @param whiteList The projects on which the dependency view should focus, must not be {@code null}.
     */