/// info | Info

Pour utiliser `EmailStr`, installez d'abord [`email-validator`](https://github.com/JoshData/python-email-validator).

Assurez-vous de créer un [environnement virtuel](../virtual-environments.md), de l'activer, puis de l'installer, par exemple :

```console
$ pip install email-validator
```

ou avec :

```console
$ pip install "pydantic[email]"
```

///

/** File generated by Grunt -- do not modify
 *  JQUERY-FORM-VALIDATOR
 *
 *  @version 2.3.77
 *  @website http://formvalidator.net/
 *  @author Victor Jonsson, http://victorjonsson.se
 *  @license MIT
 */

      Key key2 = new Key(2);
      String value2 = key2.toString();
      assertThat(cache.getUnchecked(key1)).isSameInstanceAs(value1);
      assertThat(cache.getUnchecked(key2)).isSameInstanceAs(value2);
      cache.invalidate(key1);
      assertThat(cache.asMap().containsKey(key1)).isFalse();
      assertThat(cache.asMap().containsKey(key2)).isTrue();
      assertThat(cache.size()).isEqualTo(1);

        // }

        this.memoryRegister = new Object(); // Placeholder

        log.debug("DiSNI memory region registered, size: {}", buffer.remaining());
    }

    @Override
    public void invalidate() {
        if (valid && memoryRegister != null) {
            try {
                // In real implementation, this would deregister the memory:
                // memoryRegister.deregisterMemory();

/// tip | Tipp

Pydantic unterstützt auch [`BeforeValidator`](https://docs.pydantic.dev/latest/concepts/validators/#field-before-validator) und andere. 🤓

///

{* ../../docs_src/response_model/tutorial002_py310.py hl[7,9] *}

/// info | 정보

`EmailStr`을 사용하려면 먼저 [`email-validator`](https://github.com/JoshData/python-email-validator)를 설치하세요.

[가상 환경](../virtual-environments.md)을 생성하고, 활성화한 다음 설치해야 합니다. 예를 들어:

```console
$ pip install email-validator
```

또는 다음과 같이:

```console
$ pip install "pydantic[email]"
```

///

errors.header = <ul class="has-error">
errors.footer = </ul>
errors.prefix = <li><i class="fa fa-exclamation-circle"></i>
errors.suffix = </li>
# ----------------------------------------------------------
# Javax Validator
# ---------------
constraints.AssertFalse.message = {item} 必須為 false。
constraints.AssertTrue.message = {item} 必須為 true。
constraints.DecimalMax.message = {item} 必須小於 {value}。

errors.header = <ul class="has-error">
errors.footer = </ul>
errors.prefix = <li><i class="fa fa-exclamation-circle"></i>
errors.suffix = </li>
# ----------------------------------------------------------
# Javax Validator
# ---------------
constraints.AssertFalse.message = {item} deve essere falso.
constraints.AssertTrue.message = {item} deve essere vero.
constraints.DecimalMax.message = {item} deve essere minore di {value}.

/** File generated by Grunt -- do not modify
 *  JQUERY-FORM-VALIDATOR
 *
 *  @version 2.3.77
 *  @website http://formvalidator.net/
 *  @author Victor Jonsson, http://victorjonsson.se
 *  @license MIT
 */

Puedes realmente usar esta misma técnica con una operación HTTP `PUT`.

Pero el ejemplo aquí usa `PATCH` porque fue creado para estos casos de uso.

///

/// note | Nota

Observa que el modelo de entrada sigue siendo validado.

Entonces, si deseas recibir actualizaciones parciales que puedan omitir todos los atributos, necesitas tener un modelo con todos los atributos marcados como opcionales (con valores por defecto o `None`).