/// note | 技术细节

任何一个可以与以下内容一起使用的函数：

* <a href="https://docs.python.org/3/library/contextlib.html#contextlib.contextmanager" class="external-link" target="_blank">`@contextlib.contextmanager`</a> 或者
* <a href="https://docs.python.org/3/library/contextlib.html#contextlib.asynccontextmanager" class="external-link" target="_blank">`@contextlib.asynccontextmanager`</a>

都可以作为 **FastAPI** 的依赖项。

实际上，FastAPI内部就使用了这两个装饰器。

///

Aqui veremos um exemplo usando <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">SQLModel</a>.

* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto" class="external-link" target="_blank">X-Forwarded-Proto</a>
* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host" class="external-link" target="_blank">X-Forwarded-Host</a>

///

 * Jr.'s <i>Hacker's Delight</i>, (Addison Wesley, 2002).
 *
 * <p>Similar functionality for {@code int} and for {@code long} can be found in {@link IntMath} and
 * {@link LongMath} respectively.
 *
 * @author Louis Wasserman
 * @since 11.0
 */
@GwtCompatible
public final class BigIntegerMath {
  /**

import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests that {@link AggregateFutureState} uses the expected {@code AtomicHelper} implementation.
 *
 * <p>We have more thorough testing of {@code AtomicHelper} implementations in {@link
 * AggregateFutureStateFallbackAtomicHelperTest}. The advantage to this test is that it can run
 * under Android.
 */
@NullUnmarked

import org.apache.maven.api.annotations.Experimental;

/**
 * The Exception class thrown by {@link VersionParser}.
 *
 * @since 4.0.0
 */
@Experimental
public class VersionParserException extends MavenException {

    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public VersionParserException(String message, Exception e) {
        super(message, e);
    }

возвращается имеющий смысл HTTP-заголовок `WWW-Authenticate` в соответствии со спецификациями HTTP, <a href="https://datatracker.ietf.org/doc/html/rfc7235#section-3.1" class="external-link" target="_blank">RFC 7235</a>, <a href="https://datatracker.ietf.org/doc/html/rfc9110#name-401-unauthorized" class="external-link" target="_blank">RFC 9110</a>.

Но если по какой-то причине ваши клиенты зависят от старого поведения, вы можете вернуть его, переопределив метод `make_not_authenticated_error`...

2) In the French docs, guillemets are written without extra spaces: use «texte», not « texte ».

3) Do not convert quotes inside code blocks, inline code, paths, URLs, or anything wrapped in backticks.

Examples:

    Source (English):

        «««
        "Hello world"
        “Hello Universe”
        "He said: 'Hello'"

## Conclusão { #conclusion }

Com isso, você deve ter uma compreensão básica do que são **variáveis ​​de ambiente** e como usá-las em Python.

Você também pode ler mais sobre elas na <a href="https://en.wikipedia.org/wiki/Environment_variable" class="external-link" target="_blank">Wikipedia para Variáveis ​​de Ambiente</a>.

For example, it doesn't receive `datetime` objects, as those are not compatible with JSON.

So, a `datetime` object would have to be converted to a `str` containing the data in <a href="https://en.wikipedia.org/wiki/ISO_8601" class="external-link" target="_blank">ISO format</a>.

The same way, this database wouldn't receive a Pydantic model (an object with attributes), only a `dict`.

You can use `jsonable_encoder` for that.