**SQLModel** está construido sobre <a href="https://www.sqlalchemy.org/" class="external-link" target="_blank">SQLAlchemy</a> y Pydantic. Fue creado por el mismo autor de **FastAPI** para ser la combinación perfecta para aplicaciones de FastAPI que necesiten usar **bases de datos SQL**.

/// tip | Consejo

```Python hl_lines="30-31" title="app/routers/items.py"
{!../../docs_src/bigger_applications/app/routers/items.py!}
```

/// tip | Tipp

Diese letzte Pfadoperation wird eine Kombination von Tags haben: `["items", "custom"]`.

Und sie wird auch beide Responses in der Dokumentation haben, eine für `404` und eine für `403`.

///

## Das Haupt-`FastAPI`.

### Workerprozesse und Ports

Erinnern Sie sich aus der Dokumentation [Über HTTPS](https.md){.internal-link target=_blank}, dass nur ein Prozess auf einer Kombination aus Port und IP-Adresse auf einem Server lauschen kann?

Das ist immer noch wahr.

This solved having to write YAML (another syntax) inside of Python docstrings.

This combination of Flask, Flask-apispec with Marshmallow and Webargs was my favorite backend stack until building **FastAPI**.

license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated...

    return from(Iterables.transform(getDelegate(), function));
  }

  /**
   * Applies {@code function} to each element of this fluent iterable and returns a fluent iterable
   * with the concatenated combination of results. {@code function} returns an Iterable of results.
   *
   * <p>The returned fluent iterable's iterator supports {@code remove()} if this function-returned

    return from(Iterables.transform(getDelegate(), function));
  }

  /**
   * Applies {@code function} to each element of this fluent iterable and returns a fluent iterable
   * with the concatenated combination of results. {@code function} returns an Iterable of results.
   *
   * <p>The returned fluent iterable's iterator supports {@code remove()} if this function-returned

     * {@code shareAccess} parameter controls what permissions other
     * clients have when trying to access the same file while this instance
     * is still open. This value is either {@code FILE_NO_SHARE} or any
     * combination of {@code FILE_SHARE_READ}, {@code FILE_SHARE_WRITE},
     * and {@code FILE_SHARE_DELETE} logically OR'd together.
     *
     * @param   url A URL string

			nil, true,
		},
		// Setting an invalid combination of uploadIDMarker and Marker (Test number 11-12).
		{
			bucketNames[0], "asia", "asia/europe/", "abc", "", 0,
			ListMultipartsInfo{},
			fmt.Errorf("Invalid combination of uploadID marker '%s' and marker '%s'", "abc", "asia/europe/"), false,
		},
		{
			// Contains a base64 padding character

   *
   * <p>Fingerprint2011() is a form of Murmur2 on strings up to 32 bytes and a form of CityHash for
   * longer strings. It could have been one or the other throughout. The main advantage of the
   * combination is that CityHash has a bunch of special cases for short strings that don't need to
   * be replicated here. The result will never be 0 or 1.
   *
   * <p>This function is best understood as a <a