}
```

## Pydantic `bytes` for Output Data { #pydantic-bytes-for-output-data }

You can also use `bytes` fields with `ser_json_bytes` in the model config for output data, and Pydantic will *serialize* the bytes as base64 when generating the JSON response.

{* ../../docs_src/json_base64_bytes/tutorial001_py310.py ln[1:2,12:16,29,38:41] hl[16] *}

## Pydantic `bytes` for Input and Output Data { #pydantic-bytes-for-input-and-output-data }

        CharMappingItem item3 = new CharMappingItem(3L, inputs1, "output");

        // Two items with same inputs and null output should be equal
        assertTrue(item1.equals(item2));

        // Item with null output should not equal item with non-null output
        assertFalse(item3.equals(item1));
        assertFalse(item1.equals(item3));

        // Item with null output should not equal item with different inputs

		for len(output) > 0 && (output[0] < want || output[0] != want && len(output[0]) >= 5 && output[0][:5] == want[:5]) {
			if len(output[0]) >= 5 && output[0][:5] == want[:5] {
				t.Errorf("mismatched output:\nhave %s\nwant %s", output[0], want)
				output = output[1:]
				continue Diff
			}
			t.Errorf("unexpected output: %q", output[0])
			output = output[1:]
		}

    }

    private Process createMockProcess(String output) {
        return new MockProcess(output);
    }

    private static class MockProcess extends Process {
        private final InputStream inputStream;

        public MockProcess(String output) {
            this.inputStream = new ByteArrayInputStream(output.getBytes());
        }

        @Override

### 文件中的輸出模型 { #model-for-output-in-docs }

你也可以在文件中檢視輸出模型，`name` 與 `description` 都以紅色星號標示為必填：

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image03.png">
</div>

### 文件中的輸入與輸出模型 { #model-for-input-and-output-in-docs }

如果你查看 OpenAPI 中所有可用的結構描述（JSON Schema），會看到有兩個：`Item-Input` 與 `Item-Output`。

對於 `Item-Input`，`description` 不是必填，沒有紅色星號。

                                    <label for="output" class="col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.dict_stemmeroverride_target"/></label>
                                    <div class="col-sm-9">
                                        <la:errors property="output"/>
                                        <la:text styleId="output" property="output" styleClass="form-control"/>

Never store the plain password of a user or send it in a response like this, unless you know all the caveats and you know what you are doing.

///

## Add an output model { #add-an-output-model }

We can instead create an input model with the plaintext password and an output model without it:

{* ../../docs_src/response_model/tutorial003_py310.py hl[9,11,16] *}

                writeFesenJson(zos, diagnosticId);
            }
        });
    }

    /**
     * Writes OpenSearch JSON API responses to the ZIP output stream.
     *
     * @param zos the ZIP output stream to write to
     * @param id the diagnostic ID for organizing files in the ZIP
     */
    protected void writeFesenJson(final ZipOutputStream zos, final String id) {

        throw new SomeUncheckedException();
      }
    }
    Fallback fallback = new Fallback();
    SettableFuture<Object> input = SettableFuture.create();

    ListenableFuture<Object> output = catching(input, Throwable.class, fallback, directExecutor());
    fallback.output = output;

    input.setException(new MyException());
    assertTrue(output.isCancelled());
  }

        throw new SomeUncheckedException();
      }
    }
    Fallback fallback = new Fallback();
    SettableFuture<Object> input = SettableFuture.create();

    ListenableFuture<Object> output = catching(input, Throwable.class, fallback, directExecutor());
    fallback.output = output;

    input.setException(new MyException());
    assertTrue(output.isCancelled());
  }