# 请求文件

`File` 用于定义客户端的上传文件。

/// info | 说明

因为上传文件以「表单数据」形式发送。

所以接收上传文件，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`

从 `fastapi` 导入 `File` 和 `UploadFile`：

{* ../../docs_src/request_files/tutorial001.py hl[1] *}

## 定义 `File` 参数

创建文件（`File`）参数的方式与 `Body` 和 `Form` 一样：

		buildscripts/verify-build.sh \
		minio/healing-rewrite-bucket/ \
		--disable-multipart --quiet

	"${WORK_DIR}/mc" cp \
		buildscripts/verify-build.sh \
		minio/healing-rewrite-bucket/ \
		--disable-multipart --quiet

	"${WORK_DIR}/mc" cp \
		buildscripts/verify-build.sh \
		minio/healing-rewrite-bucket/ \
		--disable-multipart --quiet

	kill ${pid}
	sleep 3

	"X-Minio-Internal-Server-Side-Encryption-Iv":             "X-Minio-Replication-Server-Side-Encryption-Iv",
	"X-Minio-Internal-Encrypted-Multipart":                   "X-Minio-Replication-Encrypted-Multipart",
	"X-Minio-Internal-Actual-Object-Size":                    "X-Minio-Replication-Actual-Object-Size",
	// Add more supported headers here.
}

	if err != nil {
		t.Fatalf("Failed to make a bucket - %v", err)
	}

	// Upload a multipart object in the second pool
	z := objLayer.(*erasureServerPools)
	set := z.serverPools[1]

	res, err := set.NewMultipartUpload(ctx, bucket, object, opts)
	if err != nil {
		t.Fatalf("Failed to create a multipart upload - %v", err)
	}
	uploadID := res.UploadID

	var uploadedParts []CompletePart

| Maximum number of objects returned per list objects request                     | 1000                                                                            |
| Maximum number of multipart uploads returned per list multipart uploads request | 1000                                                                            |

			// We might land at .metacache, .trash, .multipart
			// no need to heal them skip, only when bucket
			// is '.minio.sys'
			if u.Bucket == minioMetaBucket {
				// No MRF needed for temporary objects
				if wildcard.Match("buckets/*/.metacache/*", u.Object) {
					continue
				}
				if wildcard.Match("tmp/*", u.Object) {
					continue
				}
				if wildcard.Match("multipart/*", u.Object) {
					continue
				}

把下面的示例代码复制到 `main.py`：

{* ../../docs_src/security/tutorial001_an_py39.py *}

## 运行

/// info | 说明

先安装 <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>。

安装命令： `pip install python-multipart`。

这是因为 **OAuth2** 使用**表单数据**发送 `username` 与 `password`。

///

用下面的命令运行该示例：

<div class="termy">

```console
$ uvicorn main:app --reload

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package subnet

import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"mime/multipart"
	"net/http"
	"time"

	xhttp "github.com/minio/minio/internal/http"
)

const (
	respBodyLimit = 1 << 20 // 1 MiB

	// LoggerWebhookName - subnet logger webhook target
	LoggerWebhookName = "subnet"

			}
		}
		objects = objects[N:]
	}
	return nil
}

// isMultipart returns true if the current object is
// uploaded by the user using multipart mechanism:
// initiate new multipart, upload part, complete upload
func (o *ObjectInfo) isMultipart() bool {
	_, encrypted := crypto.IsEncrypted(o.UserDefined)
	if encrypted {
		if !crypto.IsMultiPart(o.UserDefined) {
			return false
		}
		for _, part := range o.Parts {

		config.HelpKV{
			Key:         apiStaleUploadsExpiry,
			Description: `set to expire stale multipart uploads older than this values` + defaultHelpPostfix(apiStaleUploadsExpiry),
			Optional:    true,
			Type:        "duration",
		},
		config.HelpKV{
			Key:         apiStaleUploadsCleanupInterval,
			Description: `set to change intervals when stale multipart uploads are expired` + defaultHelpPostfix(apiStaleUploadsCleanupInterval),
			Optional:    true,