O `secrets.compare_digest()` necessita receber `bytes` ou `str` que possuem apenas caracteres ASCII (os em inglês). Isso significa que não funcionaria com caracteres como o `á`, como em `Sebastián`.

Para lidar com isso, primeiramente nós convertemos o `username` e o `password` para `bytes`, codificando-os com UTF-8.

   *         <li>{@code predecessors(node)}: Connecting edge insertion order
   *         <li>{@code successors(node)}: Connecting edge insertion order
   *         <li>{@code incidentEdges(node)}: Stable order
   *         <li>{@code inEdges(node)}: Edge insertion order
   *         <li>{@code outEdges(node)}: Edge insertion order
   *         <li>{@code adjacentEdges(edge)}: Stable order

   *         <li>{@code predecessors(node)}: Connecting edge insertion order
   *         <li>{@code successors(node)}: Connecting edge insertion order
   *         <li>{@code incidentEdges(node)}: Stable order
   *         <li>{@code inEdges(node)}: Edge insertion order
   *         <li>{@code outEdges(node)}: Edge insertion order
   *         <li>{@code adjacentEdges(edge)}: Stable order

        this.runnable = runnable;
        this.executor = executor;
        this.next = next;
      }
    }
  }

  // A version of the ExecutionList that uses an explicit tail pointer to keep the nodes in order
  // rather than flipping the stack in execute().
  private static final class NewExecutionListQueue {
    static final Logger log = Logger.getLogger(NewExecutionListQueue.class.getName());

@J2ktIncompatible
@GwtIncompatible
public abstract class CharSource {

  /** Constructor for use by subclasses. */
  protected CharSource() {}

  /**
   * Returns a {@link ByteSource} view of this char source that encodes chars read from this source
   * as bytes using the given {@link Charset}.
   *
   * <p>If {@link ByteSource#asCharSource} is called on the returned source with the same charset,

@J2ktIncompatible
@GwtIncompatible
public abstract class CharSource {

  /** Constructor for use by subclasses. */
  protected CharSource() {}

  /**
   * Returns a {@link ByteSource} view of this char source that encodes chars read from this source
   * as bytes using the given {@link Charset}.
   *
   * <p>If {@link ByteSource#asCharSource} is called on the returned source with the same charset,

	retDate, err := amztime.ISO8601Parse(dateStr)
	if err != nil {
		return ErrInvalidRetentionDate
	}

	*rDate = RetentionDate{retDate}
	return nil
}

// MarshalXML encodes expiration date if it is non-zero and encodes
// empty string otherwise
func (rDate RetentionDate) MarshalXML(e *xml.Encoder, startElement xml.StartElement) error {
	if rDate.IsZero() {
		return nil
	}

import okhttp3.Response
import okhttp3.internal.platform.Platform
import okhttp3.internal.publicsuffix.PublicSuffixDatabase

/**
 * [DNS over HTTPS implementation][doh_spec].
 *
 * > A DNS API client encodes a single DNS query into an HTTP request
 * > using either the HTTP GET or POST method and the other requirements
 * > of this section.  The DNS API server defines the URI used by the
 * > request through the use of a URI Template.

			switch b {
			case '\\', '"':
				dst.WriteByte(b)
			case '\n':
				dst.WriteByte('n')
			case '\r':
				dst.WriteByte('r')
			case '\t':
				dst.WriteByte('t')
			default:
				// This encodes bytes < 0x20 except for \t, \n and \r.
				// If escapeHTML is set, it also escapes <, >, and &
				// because they can lead to security holes when
				// user-controlled strings are rendered into JSON

Debido a eso, las versiones de FastAPI anteriores a 0.99.0 todavía usaban versiones de OpenAPI menores a 3.1.0.

///

### `examples` de Pydantic y FastAPI { #pydantic-and-fastapi-examples }

Cuando añades `examples` dentro de un modelo de Pydantic, usando `schema_extra` o `Field(examples=["algo"])`, ese ejemplo se añade al **JSON Schema** para ese modelo de Pydantic.