*       instances.
   *   <li>For the constructor or static factory method used to construct instances, it's checked
   *       that when equal parameters are passed, the result instance should also be equal; and vice
   *       versa.
   *   <li>If a non-private constructor or non-private static factory method exists:
   *       <ul>
   *         <li>Test will fail if default value for a parameter cannot be determined.

![editor support](https://fastapi.tiangolo.com/img/pycharm-completion.png)

Daha önce imkânsız olduğunu düşünebileceğiniz yerlerde bile tamamlama alırsınız. Örneğin, bir request’ten gelen (iç içe de olabilir) JSON body içindeki `price` anahtarı için.

Artık anahtar adlarını yanlış yazmak, dokümana gidip gelmek ya da sonunda `username` mi `user_name` mi kullandığınızı bulmak için sayfayı yukarı aşağı kaydırmak yok.

Vamos a llamarlas "**operaciones**" también.

#### Define un *path operation decorator* { #define-a-path-operation-decorator }

{* ../../docs_src/first_steps/tutorial001_py310.py hl[6] *}

El `@app.get("/")` le dice a **FastAPI** que la función justo debajo se encarga de manejar requests que vayan a:

* el path `/`
* usando una <dfn title="un método HTTP GET"><code>get</code> operación</dfn>

/// info | Información sobre `@decorator`

ibm

// icbc : Industrial and Commercial Bank of China Limited
// https://www.iana.org/domains/root/db/icbc.html
icbc

// ice : IntercontinentalExchange, Inc.
// https://www.iana.org/domains/root/db/ice.html
ice

// icu : ShortDot SA
// https://www.iana.org/domains/root/db/icu.html
icu

// ieee : IEEE Global LLC
// https://www.iana.org/domains/root/db/ieee.html

Como parte de eso, necesitaba investigar, probar y usar muchas alternativas.

La historia de **FastAPI** es en gran parte la historia de sus predecesores.

Como se dice en la sección [Alternativas](alternatives.md):

<blockquote markdown="1">

**FastAPI** no existiría si no fuera por el trabajo previo de otros.

  /**
   * Returns a view of the complement of this {@code RangeSet}.
   *
   * <p>The returned view supports the {@link #add} operation if this {@code RangeSet} supports
   * {@link #remove}, and vice versa.
   */
  RangeSet<C> complement();

  /**
   * Returns a view of the intersection of this {@code RangeSet} with the specified range.
   *

OAuth2 especifica que cuando se utiliza el "password flow" (que estamos usando), el cliente/usuario debe enviar campos `username` y `password` como form data.

Y la especificación dice que los campos deben llamarse así. Por lo que `user-name` o `email` no funcionarían.

Pero no te preocupes, puedes mostrarlo como quieras a tus usuarios finales en el frontend.

     * clone. The only requirement is that invocations of {@link #addRepository(Repository)} on the clone do not affect
     * the state of the original resolver and vice versa.
     *
     * @return The cloned resolver, never {@code null}.
     */
    ModelResolver newCopy();

### Holding multiple locks

You're allowed to take the Http2Connection lock while holding the Http2Writer lock. But not vice-versa. Because taking the Http2Writer lock can block.

  /**
   * Returns a view of the complement of this {@code RangeSet}.
   *
   * <p>The returned view supports the {@link #add} operation if this {@code RangeSet} supports
   * {@link #remove}, and vice versa.
   */
  RangeSet<C> complement();

  /**
   * Returns a view of the intersection of this {@code RangeSet} with the specified range.
   *