**FastAPI** se basa completamente en estas anotaciones de tipos, dándole muchas ventajas y beneficios.

Pero incluso si nunca usas **FastAPI**, te beneficiaría aprender un poco sobre ellas.

/// note | Nota

Si eres un experto en Python, y ya sabes todo sobre las anotaciones de tipos, salta al siguiente capítulo.

///

## Motivación

Comencemos con un ejemplo simple:

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

///

You can see the **FastAPI Experts** for:

* [Last Month](#fastapi-experts-last-month) 🤓
* [3 Months](#fastapi-experts-3-months) 😎
* [6 Months](#fastapi-experts-6-months) 🧐
* [1 Year](#fastapi-experts-1-year) 🧑‍🔬
* [**All Time**](#fastapi-experts-all-time) 🧙

### FastAPI Experts - Last Month

Usa el chat solo para otras conversaciones generales.

///

### No uses el chat para preguntas

	result := DB.Dialector.Explain(stmt.SQL.String(), stmt.Vars...)
	expects := DB.Dialector.Explain(execStmt.SQL.String(), execStmt.Vars...)

	if !strings.HasSuffix(result, expects) {
		t.Errorf("expects: %v, got %v", expects, result)
	}

	stmt2 := dryRunDB.Where(
		DB.Scopes(NameIn1And2),
	).Or(

Use the chat only for other general conversations.

///

### Don't use the chat for questions { #dont-use-the-chat-for-questions }

   *
   * @param i the index
   * @param expect the expected value
   * @param update the new value
   * @return true if successful. False return indicates that the actual value was not equal to the
   *     expected value.
   */
  public final boolean compareAndSet(int i, double expect, double update) {
    return longs.compareAndSet(i, doubleToRawLongBits(expect), doubleToRawLongBits(update));
  }

  /**

In vielen Fällen kennen Sie möglicherweise bereits die Antwort auf diese Fragen. 🤓

Wenn Sie vielen Menschen bei ihren Fragen helfen, werden Sie offizieller [FastAPI-Experte](fastapi-people.md#experten){.internal-link target=_blank}. 🎉

        AbstractFutureState<?> future, @Nullable Waiter expect, @Nullable Waiter update) {
      return UNSAFE.compareAndSwapObject(future, WAITERS_OFFSET, expect, update);
    }

    @Override
    boolean casListeners(
        AbstractFutureState<?> future, @Nullable Listener expect, Listener update) {
      return UNSAFE.compareAndSwapObject(future, LISTENERS_OFFSET, expect, update);
    }

    @Override

    boolean casWaiters(
        AbstractFutureState<?> future, @Nullable Waiter expect, @Nullable Waiter update) {
      return waitersUpdater.compareAndSet(future, expect, update);
    }

    @Override
    boolean casListeners(
        AbstractFutureState<?> future, @Nullable Listener expect, Listener update) {
      return listenersUpdater.compareAndSet(future, expect, update);
    }

    @Override

/// tip

질문이 있는 경우, <a href="https://github.com/fastapi/fastapi/discussions/new?category=questions" class="external-link" target="_blank">GitHub 디스커션</a> 에서 질문하십시오, [FastAPI Experts](fastapi-people.md#fastapi-experts){.internal-link target=_blank} 의 도움을 받을 가능성이 높습니다.

다른 일반적인 대화에서만 채팅을 사용하십시오.

///

### 질문을 위해 채팅을 사용하지 마십시오