Question

我正在尝试使用Python3从Google云端硬盘下载文件。我收到以下错误：

Traceback (most recent call last):
  File "/run/media/prateek/EC3096E23096B356/Users/Prateek Agrawal/Google Drive/projects/mini-project/cloudDrive/a.py", line 91, in <module>
    status, done = downloader.next_chunk()
  File "/usr/lib/python3.6/site-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/googleapiclient/http.py", line 692, in next_chunk
    raise HttpError(resp, content, uri=self._uri)
googleapiclient.errors.HttpError: <HttpError 403 when requesting https://www.googleapis.com/drive/v2/files/0B8C3Gga47u6-MVlPMnR1MENYb2M?alt=media returned "The authenticated user has not granted the app 159208223574 read access to the file 0B8C3Gga47u6-MVlPMnR1MENYb2M">

我的代码是：

    import io
    from googleapiclient.http import MediaIoBaseDownload
    file_id = '0B8C3Gga47u6-MVlPMnR1MENYb2M'
    request = drive_service.files().get_media(fileId=file_id)
    fh = io.BytesIO()
    downloader = MediaIoBaseDownload(fh, request)
    done = False
    while done is False:
        status, done = downloader.next_chunk()
        print("Downloading", status.progress() * 100)

我在Google's official tutorial上找到了这段代码。

我可以访问文件的元数据但是下载文件会给出权限错误。对于身份验证，我使用的是与我尝试下载此文件相同的Google帐户。我检查了文件的元数据，我在元数据中发现我有权下载（因为我是所有者）。

以下是文件的元数据：

{
"kind": "drive#file",
"id": "0B8C3Gga47u6-MVlPMnR1MENYb2M",
"etag": "\"bFBIJPAQTIelBiVAnqXY4FaYwW4/MTUwODI3NjI3NDUzNA\"",
"selfLink": "https://www.googleapis.com/drive/v2/files/0B8C3Gga47u6-MVlPMnR1MENYb2M",
"webContentLink": "https://drive.google.com/uc?id=0B8C3Gga47u6-MVlPMnR1MENYb2M&export=download",
"alternateLink": "https://drive.google.com/file/d/0B8C3Gga47u6-MVlPMnR1MENYb2M/view?usp=drivesdk",
"embedLink": "https://drive.google.com/file/d/0B8C3Gga47u6-MVlPMnR1MENYb2M/preview?usp=drivesdk",
"iconLink": "https://drive-thirdparty.googleusercontent.com/16/type/application/zip",
"title": "folder2-20171017T213157Z-001.zip",
"mimeType": "application/zip",
"labels": {
  "starred": false,
  "hidden": false,
  "trashed": false,
  "restricted": false,
  "viewed": true
},
"createdDate": "2017-10-17T21:37:54.534Z",
"modifiedDate": "2017-10-17T21:37:54.534Z",
"modifiedByMeDate": "2017-10-17T21:37:54.534Z",
"lastViewedByMeDate": "2017-10-18T09:18:25.901Z",
"markedViewedByMeDate": "1970-01-01T00:00:00.000Z",
"version": "4",
"parents": [
  {
    "kind": "drive#parentReference",
    "id": "0AMC3Gga47u6-Uk9PVA",
    "selfLink": "https://www.googleapis.com/drive/v2/files/0B8C3Gga47u6-MVlPMnR1MENYb2M/parents/0AMC3Gga47u6-Uk9PVA",
    "parentLink": "https://www.googleapis.com/drive/v2/files/0AMC3Gga47u6-Uk9PVA",
    "isRoot": true
  }
],
"userPermission": {
  "kind": "drive#permission",
  "etag": "\"bFBIJPAQTIelBiVAnqXY4FaYwW4/InBwySrqVAcXWoXoJ-e22C6as5M\"",
  "id": "me",
  "selfLink": "https://www.googleapis.com/drive/v2/files/0B8C3Gga47u6-MVlPMnR1MENYb2M/permissions/me",
  "role": "owner",
  "type": "user"
},
"originalFilename": "folder2-20171017T213157Z-001.zip",
"fileExtension": "zip",
"md5Checksum": "a97c09989b2c14e3c5866c8390da1daa",
"fileSize": "777",
"quotaBytesUsed": "777",
"ownerNames": [
  "Abacus Gla"
],
"owners": [
  {
    "kind": "drive#user",
    "displayName": "Abacus Gla",
    "picture": {
      "url": "https://lh3.googleusercontent.com/-f5pVFhZGOyo/AAAAAAAAAAI/AAAAAAAAAA0/idMajpfWGVA/s64/photo.jpg"
    },
    "isAuthenticatedUser": true,
    "permissionId": "16118565815584902923",
    "emailAddress": "abacussocietygla@gmail.com"
  }
],
"lastModifyingUserName": "Abacus Gla",
"lastModifyingUser": {
  "kind": "drive#user",
  "displayName": "Abacus Gla",
  "picture": {
    "url": "https://lh3.googleusercontent.com/-f5pVFhZGOyo/AAAAAAAAAAI/AAAAAAAAAA0/idMajpfWGVA/s64/photo.jpg"
  },
  "isAuthenticatedUser": true,
  "permissionId": "16118565815584902923",
  "emailAddress": "abacussocietygla@gmail.com"
},
"capabilities": {
  "canCopy": true,
  "canEdit": true
},
"editable": true,
"copyable": true,
"writersCanShare": true,
"shared": false,
"explicitlyTrashed": false,
"appDataContents": false,
"headRevisionId": "0B8C3Gga47u6-WmEvTGx4cms0eGtJOTVaRXZtU2gwN2JoTG1FPQ",
"spaces": [
  "drive"
]

如何解决此问题？有没有其他方法可以使用Python3下载文件？

Answer 1

根据Python documentation，urlopen会为那些无法处理的内容HTTPError提升{403}（请求被禁止）。

来自list of error codes，

403: ('Forbidden',
          'Request forbidden -- authorization will not help').

有了这个，请尝试使用urlretrieve()，它将URL表示的网络对象复制到本地文件。

有关其他见解，请参阅此相关SO post。

Answer 2

最后，我找到了原因。实际上，当我获得凭据使用Google OAuth 2.0身份验证时，我只添加了读取MetaData范围。我应该添加更多the docs。因此，通过添加更多范围，它对我有用：）

使用Python3 Google Drive API下载文件时出现HttpError 403

2 个答案: