若不使用 `Annotated`、改用「（舊式）預設值」寫法，你在沒有 FastAPI 的「其他地方」呼叫該函式時，就得「記得」傳入正確參數，否則值會和預期不同（例如會得到 `QueryInfo` 或類似的東西，而不是 `str`）。你的編輯器不會提示，Python 執行該函式時也不會抱怨，只有在內部操作失敗時才會出錯。

因為 `Annotated` 可以有多個中繼資料註解，你甚至可以用同一個函式配合其他工具，例如 [Typer](https://typer.tiangolo.com/)。🚀

## 加入更多驗證 { #add-more-validations }

你也可以加入 `min_length` 參數：

{* ../../docs_src/query_params_str_validations/tutorial003_an_py310.py hl[10] *}

    assertThat(cache.asMap().keySet()).containsExactly(2, 4);

    CacheTesting.processPendingNotifications(cache);
    assertThat(removalListener.getCount()).isEqualTo(2);

    // Should we pepper more of these calls throughout the above? Where?
    CacheTesting.checkValidState(cache);
  }

  /**
   * Tests that when a single entry exceeds the segment's max weight, the new entry is immediately

Including external libraries also based on Pydantic, as <abbr title="Object-Relational Mapper">ORM</abbr>s, <abbr title="Object-Document Mapper">ODM</abbr>s for databases.

This also means that in many cases you can pass the same object you get from a request **directly to the database**, as everything is validated automatically.

Incluindo bibliotecas externas também baseadas no Pydantic, como <abbr title="Object-Relational Mapper - Mapeador Objeto-Relacional">ORM</abbr>s e <abbr title="Object-Document Mapper - Mapeador Objeto-Documento">ODM</abbr>s para bancos de dados.

      Comparator<? super T> comparator,
      @ParametricNullness T lower,
      BoundType lowerType,
      @ParametricNullness T upper,
      BoundType upperType) {
    return new GeneralRange<>(comparator, true, lower, lowerType, true, upper, upperType);
  }

  private final Comparator<? super T> comparator;
  private final boolean hasLowerBound;
  private final @Nullable T lowerEndpoint;

				}
			}
		default:
			bts, err = msgp.Skip(bts)
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	o = bts
	return
}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z *nsScannerOptions) Msgsize() (s int) {
	s = 1 + 3 + msgp.StringPrefixSize + len(z.DiskID) + 2 + msgp.IntSize + 2
	if z.Cache == nil {

				return
			}
		default:
			bts, err = msgp.Skip(bts)
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	o = bts
	return
}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z *BucketReplicationResyncStatus) Msgsize() (s int) {
	s = 1 + 2 + msgp.IntSize + 4 + msgp.MapHeaderSize
	if z.TargetsMap != nil {

      Comparator<? super T> comparator,
      @ParametricNullness T lower,
      BoundType lowerType,
      @ParametricNullness T upper,
      BoundType upperType) {
    return new GeneralRange<>(comparator, true, lower, lowerType, true, upper, upperType);
  }

  private final Comparator<? super T> comparator;
  private final boolean hasLowerBound;
  private final @Nullable T lowerEndpoint;

		zb0001, bts, err = msgp.ReadUintBytes(bts)
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = BitrotAlgorithm(zb0001)
	}
	o = bts
	return
}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z BitrotAlgorithm) Msgsize() (s int) {
	s = msgp.UintSize
	return
}

// DecodeMsg implements msgp.Decodable

    @Override
    public void execute(MavenSession session) {}

    @Override
    public Set<Plugin> getPluginsBoundByDefaultToAllLifecycles(String packaging) {
        Set<Plugin> plugins;

        // NOTE: The upper-case packaging name is intentional, that's a special hinting mode used for certain tests
        if ("JAR".equals(packaging)) {
            plugins = new LinkedHashSet<>();