///

## Motivación

Comencemos con un ejemplo simple:

```Python
{!../../docs_src/python_types/tutorial001.py!}
```

Llamar este programa nos muestra el siguiente <abbr title="en español: salida">output</abbr>:

```
John Doe
```

La función hace lo siguiente:

* Toma un `first_name` y un `last_name`.
* Convierte la primera letra de cada uno en una letra mayúscula con `title()`.

* `app`: el objeto creado dentro de `main.py` con la línea `app = FastAPI()`.
* `--reload`: hace que el servidor se reinicie cada vez que cambia el código. Úsalo únicamente para desarrollo.

///

En el output, hay una línea que dice más o menos:

```hl_lines="4"
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

Esa línea muestra la URL dónde se está sirviendo tu app en tu maquina local.

                        message = "Invalid POM for " + artifact.getId()
                                + ", transitive dependencies (if any) will not be available"
                                + ", enable verbose output (-X) for more details";
                    }

                    if (logger.isDebugEnabled()) {
                        message += ": " + e.getMessage();
                    }

- kubeadm: Added support for machine-readable output with `-o yaml` and `-o json` to the command `kubeadm certs check-expiration`. This change is introduced in a new API: ``` kind: CertificateExpirationInfo apiVersion: output.kubeadm.k8s.io/v1alpha3 ``` The existing non-structured formatting is preserved. The output API version v1alpha2 is now deprecated and will be removed in a future release. Please migrate to using v1alpha3.

 * Converter.apply (like Converter.convert) is capable of accepting null inputs. However, a
 * supertype of `Function<A, B>` turns out to be massively more useful to callers in practice: They
 * want their output to be non-null in operations like `stream.map(myConverter)`, and we can
 * guarantee that as long as we also require the input type to be non-null[*] (which is a
 * requirement that existing callers already fulfill).
 *

    public static final String MAVEN_STYLE_MOJO_DEFAULT = "f:green";
    public static final String MAVEN_STYLE_PROJECT_DEFAULT = "f:cyan";

    /**
     * Maven output color mode.
     * Allowed values are <code>auto</code>, <code>always</code>, <code>never</code>.
     *
     * @since 4.0.0
     */
    @Config(defaultValue = "auto")

             * to populate fields if the writeXxx operation needs this header data
             * for whatever reason. I copy over the uid here so it appears correct
             * in logging output. Logging of andx segments of messages inadvertantly
             * print header information because of the way toString always makes a
             * super.toString() call(see toString() at the end of all smbs classes).

 * also be resolved to yield the name of the associated Windows account
 * such as <tt>Administrators</tt> or <tt>MYDOM\alice</tt>.
 * <p>
 * Consider the following output of <tt>examples/SidLookup.java</tt>:
 * 
 * <pre>
 *        toString: S-1-5-21-4133388617-793952518-2001621813-512
 * toDisplayString: WNET\Domain Admins
 *         getType: 2
 *     getTypeText: Domain group

				// Scan folder we found. Should be in correct sort order where we are.
				internalLogIf(ctx, scanDir(pop))
			}
			dirStack = dirStack[:len(dirStack)-1]
		}
		return nil
	}

	// Stream output.
	return scanDir(opts.BaseDir)
}

func (p *xlStorageDiskIDCheck) WalkDir(ctx context.Context, opts WalkDirOptions, wr io.Writer) (err error) {
	if err := p.checkID(opts.DiskID); err != nil {
		return err
	}

copyright on the Program, and are irrevocable provided the stated
conditions are met.  This License explicitly affirms your unlimited
permission to run the unmodified Program.  The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work.  This License acknowledges your
rights of fair use or other equivalent, as provided by copyright law.