```

!!! info
    If you hadn't seen that `...` before: it is a special single value, it is <a href="https://docs.python.org/3/library/constants.html#Ellipsis" class="external-link" target="_blank">part of Python and is called "Ellipsis"</a>.

    It is used by Pydantic and FastAPI to explicitly declare that a value is required.

This will let **FastAPI** know that this parameter is required.

{!../../../docs_src/query_params_str_validations/tutorial006.py!}
```

!!! info "정보"
    이전에 `...`를 본적이 없다면: 특별한 단일값으로, <a href="https://docs.python.org/3/library/constants.html#Ellipsis" class="external-link" target="_blank">파이썬의 일부이며 "Ellipsis"라 부릅니다</a>.

이렇게 하면 **FastAPI**가 이 매개변수는 필수임을 알 수 있습니다.

## 쿼리 매개변수 리스트 / 다중값

쿼리 매개변수를 `Query`와 함께 명시적으로 선언할 때, 값들의 리스트나 다른 방법으로 여러 값을 받도록 선언 할 수도 있습니다.

	// generated by a Go parser.)

	switch x := x.(type) {
	default:
		fmt.Fprintf(buf, "(ast: %T)", x) // nil, ast.BadExpr, ast.KeyValueExpr

	case *ast.Ident:
		buf.WriteString(x.Name)

	case *ast.Ellipsis:
		buf.WriteString("...")
		if x.Elt != nil {
			WriteExpr(buf, x.Elt)
		}

	case *ast.BasicLit:
		buf.WriteString(x.Value)

	case *ast.FuncLit:
		buf.WriteByte('(')
		WriteExpr(buf, x.Type)

	//     37  .  .  .  .  .  .  .  .  .  Kind: STRING
	//     38  .  .  .  .  .  .  .  .  .  Value: "\"Hello, World!\""
	//     39  .  .  .  .  .  .  .  .  }
	//     40  .  .  .  .  .  .  .  }
	//     41  .  .  .  .  .  .  .  Ellipsis: -
	//     42  .  .  .  .  .  .  .  Rparen: 4:25
	//     43  .  .  .  .  .  .  }
	//     44  .  .  .  .  .  }
	//     45  .  .  .  .  }
	//     46  .  .  .  .  Rbrace: 5:1
	//     47  .  .  .  }

  *rhs_named_label_count = rhs_count;
  return labels;
}

// Generate new unnamed labels for the expression.
// For example, if we have GenerateLabels(2, {'b', 'c', 'd'}) for "...xy"
// We will have "dcxy" for the ellipsis expression since it's rank 4,
// we will have dcbxy if it's rank 5.
std::string GenerateLabels(int count,
                           const llvm::SetVector<char>& available_labels) {
  std::string new_labels(count, 0);

#top table tr th:nth-child(7),
#top table tr td:nth-child(6),
#top table tr td:nth-child(7) {
  text-align: left;
}
#top table tr td:nth-child(6) {
  width: 100%;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}
#flathdr1, #flathdr2, #cumhdr1, #cumhdr2, #namehdr {
  cursor: ns-resize;
}
.hilite {
  background-color: #ebf5fb;
  font-weight: bold;

			Walk(v, n.Tag)
		}
		if n.Comment != nil {
			Walk(v, n.Comment)
		}

	case *FieldList:
		walkList(v, n.List)

	// Expressions
	case *BadExpr, *Ident, *BasicLit:
		// nothing to do

	case *Ellipsis:
		if n.Elt != nil {
			Walk(v, n.Elt)
		}

	case *FuncLit:
		Walk(v, n.Type)
		Walk(v, n.Body)

	case *CompositeLit:
		if n.Type != nil {
			Walk(v, n.Type)
		}
		walkList(v, n.Elts)

        or hasattr(origin, "__get_pydantic_core_schema__")
    )


def field_annotation_is_scalar(annotation: Any) -> bool:
    # handle Ellipsis here to make tuple[int, ...] work nicely
    return annotation is Ellipsis or not field_annotation_is_complex(annotation)


def field_annotation_is_scalar_sequence(annotation: Union[Type[Any], None]) -> bool:
    origin = get_origin(annotation)

	if !matched {
		return
	}

	if !call.Ellipsis.IsValid() {
		typ, ok := pass.TypesInfo.Types[call.Fun].Type.(*types.Signature)
		if !ok {
			return
		}
		if len(call.Args) > typ.Params().Len() {
			// If we're passing more arguments than what the
			// print/printf function can take, adding an ellipsis
			// would break the program. For example:
			//

		if paren {
			p.print(token.RPAREN)
		}

		p.setPos(x.Lparen)
		p.print(token.LPAREN)
		if x.Ellipsis.IsValid() {
			p.exprList(x.Lparen, x.Args, depth, 0, x.Ellipsis, false)
			p.setPos(x.Ellipsis)
			p.print(token.ELLIPSIS)
			if x.Rparen.IsValid() && p.lineFor(x.Ellipsis) < p.lineFor(x.Rparen) {
				p.print(token.COMMA, formfeed)
			}
		} else {