// and not for correctness. The only downside of keeping this 1 seems to be
  // that the gradient accumulation is unbounded and we will never
  // aggressively aggregate accumulated gradients to recover memory.
  // Revisit and fix.
  return 1;
}

// Consumes references to the tensors in the gradient_tensors list and returns
// a tensor with the result.
AbstractTensorHandle* TapeVSpace::AggregateGradients(

E qualquer classe de modelo que não tenha `table=True` é um **modelo de dados**, esses são na verdade apenas modelos Pydantic (com alguns recursos extras pequenos). 🤓

Com o SQLModel, podemos usar a **herança** para **evitar duplicação** de todos os campos em todos os casos.

#### `HeroBase` - a classe base { #herobase-the-base-class }

Vamos começar com um modelo `HeroBase` que tem todos os **campos compartilhados** por todos os modelos:

* `int`
* `float`
* `bool`
* `bytes`

{* ../../docs_src/python_types/tutorial005_py310.py hl[1] *}

### Módulo `typing` { #typing-module }

Para alguns casos adicionais, você pode precisar importar alguns itens do módulo padrão `typing`, por exemplo, quando quiser declarar que algo pode ter "qualquer tipo", você pode usar `Any` de `typing`:

```python
from typing import Any

   * does not alter the value returned by {@code getValue()}, though a subsequent {@code setValue()}
   * call won't update the multimap but will lead to a revised value being returned by {@code
   * getValue()}.
   */
  @Override
  public List<Entry<K, V>> entries() {
    return (List<Entry<K, V>>) super.entries();
  }

  @Override

    // is not available in GWT yet.  To keep the code simple and code size more,
    // we make a copy here, instead of creating a view of it.
    //
    // TODO: revisit if it's unbearably slow or when GWT supports
    // TreeMap.navigatbleKeySet().
    return ImmutableSortedSet.copyOf(comparator, sortedDelegate.keySet());
  }

  @Override

   * does not alter the value returned by {@code getValue()}, though a subsequent {@code setValue()}
   * call won't update the multimap but will lead to a revised value being returned by {@code
   * getValue()}.
   */
  @Override
  public List<Entry<K, V>> entries() {
    return (List<Entry<K, V>>) super.entries();
  }

  @Override

### Outras formas de código assíncrono { #other-forms-of-asynchronous-code }

Esse estilo de usar `async` e `await` é relativamente novo na linguagem.

    if (floorEntry != null && floorEntry.getValue().contains(value)) {
      return floorEntry.getValue();
    } else {
      // TODO(kevinb): revisit this design choice
      return null;
    }
  }

  @Override
  public boolean intersects(Range<C> range) {
    checkNotNull(range);

    sure the requirements of this License are fulfilled for the Covered
    Software.

4. Versions of the License.

    4.1. New Versions.

    Oracle is the initial license steward and may publish revised and/or
    new versions of this License from time to time. Each version will be
    given a distinguishing version number. Except as provided in Section
    4.3, no one other than the license steward has the right to modify

<img src="/img/async/concurrent-burgers/concurrent-burgers-05.png" class="illustration">

Mientras esperas y hablas con tu crush, de vez en cuando revisas el número mostrado en el mostrador para ver si ya es tu turno.

Luego, en algún momento, finalmente es tu turno. Vas al mostrador, obtienes tus hamburguesas y vuelves a la mesa.