```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial006_py39.py!}
```

////

//// tab | Python 3.8+

De `typing`, importe `List` (com o `L` maiúsculo):

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial006.py!}
```

Declare uma variável com a mesma sintaxe com dois pontos (`:`)

# Conceptos de Implementación

Cuando implementas una aplicación **FastAPI**, o en realidad, cualquier tipo de API web, hay varios conceptos que probablemente te importen, y al entenderlos, puedes encontrar la **forma más adecuada** de **implementar tu aplicación**.

Algunos de los conceptos importantes son:

* Seguridad - HTTPS
* Ejecución al iniciar
* Reinicios
* Replicación (la cantidad de procesos en ejecución)
* Memoria

pkg go/ast, func IsGenerated(*File) bool #28089
pkg go/ast, func NewPackage //deprecated #52463
pkg go/ast, type File struct, GoVersion string #59033
pkg go/ast, type Importer //deprecated #52463
pkg go/ast, type Object //deprecated #52463
pkg go/ast, type Package //deprecated #52463
pkg go/ast, type Scope //deprecated #52463
pkg go/build/constraint, func GoVersion(Expr) string #59033

					normKey, origKeys)
			}

			if len(origKeys[1:]) > 0 {
				// Log that extra DN mappings will not be imported.
				iamLogEvent(ctx, "import-ldap-normalize: extraneous DN mappings found for LDAP DN[%s]: %v will not be imported", origKeys[0], origKeys[1:])
			}

			// Policies mapped to the DN's are the same, so we remove the extra
			// ones from the map.

		// Built-in user should be imported without errors even if LDAP is
		// enabled.
		allUsersFile: `{
  "foo": {
    "secretKey": "foobar123",
    "status": "enabled"
  }
}
`,
		// Built-in groups should be imported without errors even if LDAP is
		// enabled.
		allGroupsFile: `{
  "mygroup": {
    "version": 1,

---

**Note** : vous pouvez mélanger `def` et `async def` dans vos *fonctions de chemin* autant que nécessaire, **FastAPI** saura faire ce qu'il faut avec.

Au final, peu importe le cas parmi ceux ci-dessus, **FastAPI** fonctionnera de manière asynchrone et sera extrêmement rapide.

/// info

Hug wurde von Timothy Crosley erstellt, dem gleichen Schöpfer von <a href="https://github.com/timothycrosley/isort" class="external-link" target="_blank">`isort`</a>, einem großartigen Tool zum automatischen Sortieren von Importen in Python-Dateien.

///

/// check | Ideen, die **FastAPI** inspiriert haben

Hug inspirierte Teile von APIStar und war eines der Tools, die ich am vielversprechendsten fand, neben APIStar.

depends on functionality of the <i>imported</i> package
(<a href="#Program_initialization_and_execution">§Program initialization and execution</a>)
and enables access to <a href="#Exported_identifiers">exported</a> identifiers
of that package.
The import names an identifier (PackageName) to be used for access and an ImportPath
that specifies the package to be imported.
</p>

<pre class="ebnf">

9. Instale as dependências de pacote do arquivo `requirements.txt` gerado.

10. Copie o diretório `app` para o diretório `/code`.

11. Execute o comando `uvicorn`, informando-o para usar o objeto `app` importado de `app.main`.

/// tip

Clique nos números das bolhas para ver o que cada linha faz.

///

	-V
		Print cgo version and exit.
	-debug-define
		Debugging option. Print #defines.
	-debug-gcc
		Debugging option. Trace C compiler execution and output.
	-dynimport file
		Write list of symbols imported by file. Write to
		-dynout argument or to standard output. Used by go
		build when building a cgo package.
	-dynlinker
		Write dynamic linker as part of -dynimport output.
	-dynout file