/// tip | 팁

Pydantic이 **Rust** 쪽에서 직렬화하므로, 반환 타입을 선언하지 않았을 때보다 훨씬 더 높은 **성능**을 얻을 수 있습니다.

///

### 비 async *경로 처리 함수* { #non-async-path-operation-functions }

`async`가 없는 일반 `def` 함수도 사용할 수 있으며, 동일하게 `yield`를 사용할 수 있습니다.

FastAPI가 이벤트 루프를 막지 않도록 올바르게 실행을 보장합니다.

이 경우 함수가 async가 아니므로 적절한 반환 타입은 `Iterable[Item]`입니다:

        end
    end

    style V2 fill:#f9fff3
    style V1 fill:#fff6f0
    style V1Field fill:#fff6f0
    style V2Field fill:#f9fff3
```

Bazı durumlarda, FastAPI uygulamanızda aynı **path operation** içinde hem Pydantic v1 hem de v2 modellerini kullanmak bile mümkündür:

{* ../../docs_src/pydantic_v1_in_v2/tutorial003_an_py310.py hl[2:3,6,12,21:22] *}

FastAPI передаватиме кожний фрагмент даних до `StreamingResponse` як є; він не намагатиметься перетворити його на JSON чи щось подібне.

### Не-async функції операції шляху { #non-async-path-operation-functions }

Можна також використовувати звичайні функції `def` (без `async`) і так само застосовувати `yield`.

{* ../../docs_src/stream_data/tutorial001_py310.py ln[26:29] hl[27] *}

### Без анотації { #no-annotation }

namespace {

struct LoggingDevice {
  std::string device_name;
  std::string underlying_device;
  // Set to true whenever a TensorHandle is copied onto the device
  bool* arrived_flag;
  // Set to true whenever an operation is executed
  bool* executed_flag;
  // If true, only explicit op placements are accepted. If false, uses
  // type-based dispatch.
  bool strict_scope_placement;
};

struct LoggedTensor {

     * @param queryBuilder the query used to identify documents to delete
     * @return true if the operation completes successfully
     * @throws SuggesterException if any error occurs during the delete operation
     */
    public static boolean deleteByQuery(final Client client, final SuggestSettings settings, final String index,
            final QueryBuilder queryBuilder) {

            return;
        }

        if (!ComponentUtil.getFessConfig().isWebApiPopularWord()) {
            writeJsonResponse(HttpServletResponse.SC_BAD_REQUEST, escapeJsonKeyValue(MESSAGE_FIELD, "Unsupported operation."));
            return;
        }

        final String seed = request.getParameter("seed");
        String[] tags = SearchRequestParams.getParamValueArray(request, "label");

    Map<K, V> result = super.convertToHashFloodingResistantImplementation();
    links = null;
    return result;
  }

  /*
   * For discussion of the safety of the following methods for operating on predecessors and
   * successors, see the comments near the end of CompactHashMap, noting that the methods here call
   * link(), which is defined at the end of this file.
   */

        ServerMessageBlock request = new SmbComDelete("testfile.txt");
        ServerMessageBlock response = new SmbComBlankResponse();

        // Should throw exception for invalid operation
        assertThrows(SmbException.class, () -> tree.send(request, response));
    }

    @Test
    void testTreeConnectWithWaitInterrupted() throws Exception {

```Python
some_variable: PlaneItem | CarItem
```

But if we put that in the assignment `response_model=PlaneItem | CarItem` we would get an error, because Python would try to perform an **invalid operation** between `PlaneItem` and `CarItem` instead of interpreting that as a type annotation.

## List of models { #list-of-models }

The same way, you can declare responses of lists of objects.

{* ../../docs_src/stream_data/tutorial001_py310.py ln[1:23] hl[20,23] *}

FastAPI 會如實將每個資料區塊交給 `StreamingResponse`，不會嘗試將其轉換為 JSON 或其他格式。

### 非 async 路徑操作函式 { #non-async-path-operation-functions }

你也可以使用一般的 `def` 函式（沒有 `async`），並以相同方式使用 `yield`。

{* ../../docs_src/stream_data/tutorial001_py310.py ln[26:29] hl[27] *}

### 不需要型別註解 { #no-annotation }

對於串流二進位資料，其實不需要宣告回傳型別註解。