pkg bufio, method (*Reader) WriteTo(io.Writer) (int64, error)
pkg bufio, method (*Scanner) Bytes() []uint8
pkg bufio, method (*Scanner) Err() error
pkg bufio, method (*Scanner) Scan() bool
pkg bufio, method (*Scanner) Split(SplitFunc)
pkg bufio, method (*Scanner) Text() string
pkg bufio, method (*Writer) ReadFrom(io.Reader) (int64, error)
pkg bufio, method (ReadWriter) ReadFrom(io.Reader) (int64, error)

		})
	})
	assertEqualSQL(t, `SELECT * FROM users ORDER BY id DESC`, sql)
}

// assertEqualSQL for assert that the sql is equal, this method will ignore quote, and dialect specials.
func assertEqualSQL(t *testing.T, expected string, actually string) {
	t.Helper()

	// replace SQL quote, convert into postgresql like ""
	expected = replaceQuoteInSQL(expected)

	}

	// Query string.
	queryStr := req.Form.Encode()

	// Get canonical request.
	canonicalRequest := getCanonicalRequest(extractedSignedHeaders, payload, queryStr, req.URL.Path, req.Method)

	// Get string to sign from canonical request.
	stringToSign := getStringToSign(canonicalRequest, date, signV4Values.Credential.getScope())

	// Get hmac signing key.

Aber nun stellen Sie sich vor, Sie würden es selbst schreiben.

Irgendwann sind die Funktions-Parameter fertig, Sie starten mit der Definition des Körpers ...

Aber dann müssen Sie „diese Methode aufrufen, die den ersten Buchstaben in Großbuchstaben umwandelt“.

War es `upper`? War es `uppercase`? `first_uppercase`? `capitalize`?

Digamos que quieres que devuelva JSON con sangría y formato, por lo que quieres usar la opción de orjson `orjson.OPT_INDENT_2`.

Podrías crear un `CustomORJSONResponse`. Lo principal que tienes que hacer es crear un método `Response.render(content)` que devuelva el contenido como `bytes`:

{* ../../docs_src/custom_response/tutorial009c_py39.py hl[9:14,17] *}

Ahora en lugar de devolver:

```json
{"message": "Hello World"}

///

Em Python, você pode criar Gerenciadores de Contexto ao <a href="https://docs.python.org/3/reference/datamodel.html#context-managers" class="external-link" target="_blank">criar uma classe com dois métodos: `__enter__()` e `__exit__()`</a>.

Você também pode usá-los dentro de dependências com `yield` do **FastAPI** ao utilizar
`with` ou `async with` dentro da função da dependência:

///

In Python können Sie Kontextmanager erstellen, indem Sie <a href="https://docs.python.org/3/reference/datamodel.html#context-managers" class="external-link" target="_blank">eine Klasse mit zwei Methoden erzeugen: `__enter__()` und `__exit__()`</a>.

Sie können solche auch innerhalb von **FastAPI**-Abhängigkeiten mit `yield` verwenden, indem Sie `with`- oder `async with`-Anweisungen innerhalb der Abhängigkeits-Funktion verwenden:

* `@app.post()`
* `@app.put()`
* `@app.delete()`
* etc.

{* ../../docs_src/response_model/tutorial001_py310.py hl[17,22,24:27] *}

/// note

Notice that `response_model` is a parameter of the "decorator" method (`get`, `post`, etc). Not of your *path operation function*, like all the parameters and body.

///

En Python hay una forma de hacer que una instance de una clase sea un "callable".

No la clase en sí (que ya es un callable), sino una instance de esa clase.

Para hacer eso, declaramos un método `__call__`:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[12] *}

            String schemaLocation = ModelVersionUtils.getSchemaLocationForModelVersion("5.0.0");
            assertNotNull(schemaLocation); // Should return 4.2.0 schema for newer versions
            // The method returns the 4.2.0 schema location for versions newer than 4.1.0
            assertTrue(
                    schemaLocation.contains("4.2.0"),