```
1 validation error
path -> item_id
  value is not a valid integer (type=type_error.integer)
```

#### `RequestValidationError` vs `ValidationError` { #requestvalidationerror-vs-validationerror }

/// warning

These are technical details that you might skip if it's not important for you now.

///

   * iterable}. The iterator's {@code hasNext()} method returns {@code true} until {@code iterable}
   * is empty.
   *
   * <p><b>Warning:</b> Typical uses of the resulting iterator may produce an infinite loop. You
   * should use an explicit {@code break} or be certain that you will eventually remove all the
   * elements.
   *

 *
 * <p>If neither {@link #skipNulls()} nor {@link #useForNull(String)} is specified, the joining
 * methods will throw {@link NullPointerException} if any given element is null.
 *
 * <p><b>Warning: joiner instances are always immutable</b>; a configuration method such as {@code
 * useForNull} has no effect on the instance it is invoked on! You must store and use the new joiner

          <version>3.1.3</version>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>
          <version>3.4.2</version>
          <configuration>
            <!-- Warning: Guava (at least the main module) uses maven-bundle-plugin, not maven-jar-plugin, so the configuration does not apply to it. That configuration may or may not apply to guava-testlib or other modules. -->
            <excludes>

  /**
   * Returns a new target iterator each time it's called. This is the iterator you are trying to
   * test. This must return an Iterator that returns the expected elements passed to the constructor
   * in the given order. Warning: it is not enough to simply pull multiple iterators from the same
   * source Iterable, unless that Iterator is unmodifiable.
   */
  protected abstract I newTargetIterator();

  /**

          <version>3.1.3</version>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>
          <version>3.4.2</version>
          <configuration>
            <!-- Warning: Guava (at least the main module) uses maven-bundle-plugin, not maven-jar-plugin, so the configuration does not apply to it. That configuration may or may not apply to guava-testlib or other modules. -->
            <excludes>

 * {@link com.google.common.collect.Multiset} such as {@link
 * com.google.common.collect.ConcurrentHashMultiset} instead.
 *
 * <p><b>Warning:</b> Unlike {@code Multiset}, entries whose values are zero are not automatically
 * removed from the map. Instead they must be removed manually with {@link #removeAllZeros}.
 *
 * @author Charles Fry
 * @since 11.0
 */

import org.jspecify.annotations.Nullable;

/**
 * A {@link SortedMultiset} whose contents will never change, with many other important properties
 * detailed at {@link ImmutableCollection}.
 *
 * <p><b>Warning:</b> as with any sorted collection, you are strongly advised not to use a {@link
 * Comparator} or {@link Comparable} type whose comparison behavior is <i>inconsistent with

UserInDB(
    username = user_dict["username"],
    password = user_dict["password"],
    email = user_dict["email"],
    full_name = user_dict["full_name"],
    hashed_password = hashed_password,
)
```

/// warning | 注意

サポートしている追加機能は、データの可能な流れをデモするだけであり、もちろん本当のセキュリティを提供しているわけではありません。

///

## 重複の削減

コードの重複を減らすことは、**FastAPI**の中核的なアイデアの１つです。

///

/// warning | 경고

다수의 `File` 과 `Form` 매개변수를 한 *경로 작동*에 선언하는 것이 가능하지만, 요청의 본문이 `application/json` 가 아닌 `multipart/form-data` 로 인코딩 되기 때문에 JSON으로 받아야하는 `Body` 필드를 함께 선언할 수는 없습니다.

이는 **FastAPI**의 한계가 아니라, HTTP 프로토콜에 의한 것입니다.

///