Isso também significa que em muitos casos você poderá passar o mesmo objeto que você receber de uma requisição **diretamente para o banco de dados**, já que tudo é validado automaticamente.

O mesmo se aplica no sentido inverso, em muitos casos você poderá simplesmente passar o objeto que você recebeu do banco de dados **diretamente para o cliente**.

FastAPI 依賴 Pydantic 與 Starlette。

### `standard` 依賴套件 { #standard-dependencies }

當你以 `pip install "fastapi[standard]"` 安裝 FastAPI 時，會包含 `standard` 這組可選依賴套件：

Pydantic 會使用：

* [`email-validator`](https://github.com/JoshData/python-email-validator) - 用於電子郵件驗證。

Starlette 會使用：

* [`httpx`](https://www.python-httpx.org) - 若要使用 `TestClient` 必須安裝。
* [`jinja2`](https://jinja.palletsprojects.com) - 若要使用預設的模板設定必須安裝。

    return (totalLoadCount == 0) ? 0.0 : (double) totalLoadTime / totalLoadCount;
  }

  /**
   * Returns the number of times an entry has been evicted. This count does not include manual
   * {@linkplain Cache#invalidate invalidations}.
   */
  public long evictionCount() {
    return evictionCount;
  }

  /**
   * Returns a new {@code CacheStats} representing the difference between this {@code CacheStats}

    return (totalLoadCount == 0) ? 0.0 : (double) totalLoadTime / totalLoadCount;
  }

  /**
   * Returns the number of times an entry has been evicted. This count does not include manual
   * {@linkplain Cache#invalidate invalidations}.
   */
  public long evictionCount() {
    return evictionCount;
  }

  /**
   * Returns a new {@code CacheStats} representing the difference between this {@code CacheStats}

        }
        cb.query().addOrderBy_CreatedTime_Desc();
    }

    /**
     * Sets up the conditions for storing a crawling information record.
     * Validates that the entity is not null and sets the creation time if not already present.
     *
     * @param crawlingInfo the crawling information entity to prepare for storage

        final Constraint constraint = CustomSize.class.getAnnotation(Constraint.class);
        assertNotNull(constraint, "Constraint annotation should be present");
        assertEquals("Validator class should be CustomSizeValidator", CustomSizeValidator.class, constraint.validatedBy()[0]);
    }

    // Test default values
    @Test
    public void test_defaultValues() throws Exception {

### `standard` 의존성 { #standard-dependencies }

`pip install "fastapi[standard]"`로 FastAPI를 설치하면 `standard` 그룹의 선택적 의존성이 함께 설치됩니다.

Pydantic이 사용하는:

* [`email-validator`](https://github.com/JoshData/python-email-validator) - 이메일 유효성 검사.

Starlette이 사용하는:

* [`httpx`](https://www.python-httpx.org) - `TestClient`를 사용하려면 필요.
* [`jinja2`](https://jinja.palletsprojects.com) - 기본 템플릿 설정을 사용하려면 필요.

Luego convertirá y validará los datos. Así que, cuando uses ese objeto `settings`, tendrás datos de los tipos que declaraste (por ejemplo, `items_per_user` será un `int`).

### Usar el `settings` { #use-the-settings }

### `standard` 依存関係 { #standard-dependencies }

FastAPI を `pip install "fastapi[standard]"` でインストールすると、`standard` グループのオプション依存関係が含まれます。

Pydantic によって使用されるもの:

* [`email-validator`](https://github.com/JoshData/python-email-validator) - メール検証のため。

Starlette によって使用されるもの:

* [`httpx`](https://www.python-httpx.org) - `TestClient` を使用したい場合に必要です。
* [`jinja2`](https://jinja.palletsprojects.com) - デフォルトのテンプレート設定を使用したい場合に必要です。

EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

7. GENERAL

If any provision of this Agreement is invalid or unenforceable under
applicable law, it shall not affect the validity or enforceability of
the remainder of the terms of this Agreement, and without further
action by the parties hereto, such provision shall be reformed to the
minimum extent necessary to make such provision valid and enforceable.