Esto en realidad inspiró la actualización de partes de Pydantic, para soportar el mismo estilo de declaración de validación (toda esta funcionalidad ya está disponible en Pydantic).

///

### <a href="https://github.com/hugapi/hug" class="external-link" target="_blank">Hug</a> { #hug }

{* ../../docs_src/first_steps/tutorial001.py *}

Скопіюйте це до файлу `main.py`.

Запустіть сервер:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

A Bash code example...

```bash
# Print a greeting to the universe
echo "Hello universe"
```

...and a console code example...

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>
<span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting server
        Searching for package file structure
```

...and another console code example...

Un ejemplo de código Bash...

```bash
# Imprime un saludo al universo
echo "Hello universe"
```

...y un ejemplo de código de consola...

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>
<span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting server
        Searching for package file structure
```

...y otro ejemplo de código de consola...

**FastAPI** takes advantage of these type hints to do several things.

With **FastAPI** you declare parameters with type hints and you get:

* **Editor support**.
* **Type checks**.

...and **FastAPI** uses the same declarations to:

* **Define requirements**: from request path parameters, query parameters, headers, bodies, dependencies, etc.
* **Convert data**: from the request to the required type.
* **Validate data**: coming from each request:

    return toArray(EMPTY_ARRAY);
  }

  @CanIgnoreReturnValue
  @Override
  /*
   * This suppression is here for two reasons:
   *
   * 1. b/192354773 in our checker affects toArray declarations.
   *
   * 2. `other[size] = null` is unsound. We could "fix" this by requiring callers to pass in an
   * array with a nullable element type. But probably they usually want an array with a non-nullable

Wenn wir `-> HeroPublic` deklariert hätten, würden Ihr Editor und Linter (zu Recht) reklamieren, dass Sie ein `Hero` anstelle eines `HeroPublic` zurückgeben.

Durch die Deklaration in `response_model` sagen wir **FastAPI**, dass es seine Aufgabe erledigen soll, ohne die Typannotationen und die Hilfe von Ihrem Editor und anderen Tools zu beeinträchtigen.

///

"bytes" "crypto/internal/fips140" _ "crypto/internal/fips140/check" "errors" "sync" ) func fipsPCT(k *PrivateKey) { fips140.PCT("Ed25519 sign and verify PCT", func() error { return pairwiseTest(k) }) } // pairwiseTest needs to be a top-level function declaration to let the calls // inline and their allocations not escape. func pairwiseTest(k *PrivateKey) error { msg := []byte("PCT") sig := Sign(k, msg) // Note that this runs pub.a.SetBytes. If we wanted to make key generation // in FIPS mode faster, we...

    comprehension tool. Based on the concept of a project object model:
    builds, dependency management, documentation creation, site
    publication, and distribution publication are all controlled from
    the declarative file. Maven can be extended by plugins to utilise a
    number of other development tools for reporting or the build
    process.
  </description>
  <url>http://maven.apache.org/</url>
  <inceptionYear>2001</inceptionYear>

```bash
# Imprimir uma saudação ao universo
echo "Hello universe"
```

...e um exemplo de código de console...

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>
<span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting server
        Searching for package file structure
```

...e outro exemplo de código de console...