Sie können gleichzeitig Dateien und Formulardaten mit `File` und `Form` definieren.

/// info

Um hochgeladene Dateien und/oder Formulardaten zu empfangen, installieren Sie zuerst <a href="https://andrew-d.github.io/python-multipart/" class="external-link" target="_blank">`python-multipart`</a>.

Z. B. `pip install python-multipart`.

///

## `File` und `Form` importieren

//// tab | Python 3.9+

# 请求表单与文件

FastAPI 支持同时使用 `File` 和 `Form` 定义文件和表单字段。

/// info | "说明"

接收上传文件或表单数据，要预先安装 <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>。

例如，`pip install python-multipart`。

///

## 导入 `File` 与 `Form`

```Python hl_lines="1"
{!../../docs_src/request_forms_and_files/tutorial001.py!}
```

## 定义 `File` 与 `Form` 参数

创建文件和表单参数的方式与 `Body` 和 `Query` 一样：

nsStart:"Du måste åtminstone välja ",badNumberOfSelectedOptionsEnd:" svarsalternativ",badAlphaNumeric:"Du kan endast svara med alfanumersika tecken (a-z och siffror)",badAlphaNumericExtra:" och ",wrongFileSize:"Filen du försöker ladda upp är för stor (max %s)",wrongFileType:"Endast filer av typen %s är tillåtna",groupCheckedRangeStart:"Välj mellan ",groupCheckedTooFewStart:"Då måste göra minst ",groupCheckedTooManyStart:"Du får inte göra fler än ",groupCheckedEnd:" val",badCreditCard:"Du har angett...

Joe Tsai <******@****.***> 1472512232 -0700

	DB.First(&animal, animal.Counter)
	if animal.Name != "amazing horse" {
		t.Errorf("Update a filed with a default value should occur. But got %v\n", animal.Name)
	}

	// When changing a field with a default value with blank value
	animal.Name = ""
	DB.Save(&animal)
	DB.First(&animal, animal.Counter)
	if animal.Name != "" {
		t.Errorf("Update a filed to blank with a default value should occur. But got %v\n", animal.Name)
	}

Joe Tsai <******@****.***> 1503528984 -0700

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      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed