lines(
			"#ifdef A",
			"#ifdef B",
			"#define C 1234",
			"#else",
			"#define C 5678",
			"#endif",
			"#endif",
			"C",
		),
		"C.\n",
	},
	{
		"nested #define",
		lines(
			"#define A #define B THIS",
			"A",
			"B",
		),
		"THIS.\n",
	},
	{
		"nested #define with args",
		lines(
			"#define A #define B(x) x",
			"A",
			"B(THIS)",
		),

}
```

### Configurando o `root_path` na aplicação FastAPI

Alternativamente, se você não tiver uma maneira de fornecer uma opção de linha de comando como `--root-path` ou equivalente, você pode definir o parâmetro `--root-path` ao criar sua aplicação FastAPI:

{* ../../docs_src/behind_a_proxy/tutorial002.py hl[3] *}

perhaps additional padding.  C arrays become Go arrays.  C pointers
become Go pointers.  C function pointers become Go's uintptr.
C void pointers become Go's unsafe.Pointer.

For example, mpz_t is defined in <gmp.h> as:

	typedef unsigned long int mp_limb_t;

	typedef struct
	{
		int _mp_alloc;
		int _mp_size;
		mp_limb_t *_mp_d;
	} __mpz_struct;

	typedef __mpz_struct mpz_t[1];

Cgo generates:

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setReferer_SpanTerm(String referer) {
        setReferer_SpanTerm("referer", null);
    }

    public void setReferer_SpanTerm(String referer, ConditionOptionCall<SpanTermQueryBuilder> opLambda) {
        SpanTermQueryBuilder builder = regSpanTermQ("referer", referer);

/// note | "Hinweis"

Es ist üblich, dass jeder Authentifizierungsanbieter seine Flows anders benennt, um sie zu einem Teil seiner Marke zu machen.

Aber am Ende implementieren sie denselben OAuth2-Standard.

///

**FastAPI** enthält Werkzeuge für alle diese OAuth2-Authentifizierungs-Flows in `fastapi.security.oauth2`.

Mas ele foi criado antes da existência do _type hints_ do Python. Então, para definir todo o <abbr title="definição de como os dados devem ser formados">_schema_</abbr> você precisa utilizar específicas ferramentas e classes fornecidas pelo Marshmallow.

/// check | "**FastAPI** inspirado para"

Usar código para definir "schemas" que forneçam, automaticamente, tipos de dados e validação.

///

  val showHttp2Frames: Boolean by option("--frames", help = "Log HTTP/2 frames to STDERR").flag()

  val referer: String? by option("-e", "--referer", help = "Referer URL")

  val verbose: Boolean by option("-v", "--verbose", help = "Makes $NAME verbose during the operation").flag()

  val sslDebug: Boolean by option(help = "Output SSL Debug").flag()

# Parâmetros de Cookie

Você pode definir parâmetros de Cookie da mesma maneira que define paramêtros com `Query` e `Path`.

## Importe `Cookie`

Primeiro importe `Cookie`:

//// tab | Python 3.10+

```Python hl_lines="3"
{!> ../../docs_src/cookie_params/tutorial001_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="3"
{!> ../../docs_src/cookie_params/tutorial001_an_py39.py!}
```

////

message FlowDistinguisherMethod {
  // `type` is the type of flow distinguisher method
  // The supported types are "ByUser" and "ByNamespace".
  // Required.
  optional string type = 1;
}

// FlowSchema defines the schema of a group of flows. Note that a flow is made up of a set of inbound API requests with
// similar attributes and is identified by a pair of strings: the name of the FlowSchema and a "flow distinguisher".
message FlowSchema {

message FlowDistinguisherMethod {
  // `type` is the type of flow distinguisher method
  // The supported types are "ByUser" and "ByNamespace".
  // Required.
  optional string type = 1;
}

// FlowSchema defines the schema of a group of flows. Note that a flow is made up of a set of inbound API requests with
// similar attributes and is identified by a pair of strings: the name of the FlowSchema and a "flow distinguisher".
message FlowSchema {