无法使用python列出谷歌驱动器中的文件

不确定这是否与我的代码或 Google 方面的某些内容有关，但是我可以将文件推送到驱动器，但由于某种原因我无法列出文件夹内的文件/文件夹元数据。这是我正在使用的代码：

SCOPES = ['https://www.googleapis.com/auth/drive']
SERVICE_ACCOUNT_FILE = 'creds.json'
credentials = service_account.Credentials.from_service_account_file(SERVICE_ACCOUNT_FILE, scopes=SCOPES)
service = build('drive', 'v3', credentials=credentials)

topFolderId = '0AAYXadsMHp8IUk9PVA'

items = []
pageToken = ""
while pageToken is not None:
    response = service.files().list(q="'" + topFolderId + "' in parents", pageSize=1000, pageToken=pageToken, fields="nextPageToken, files(id, name)").execute()
    items.extend(response.get('files', []))
    pageToken = response.get('nextPageToken')

这里有任何想法，我认为这与权限无关，因为我可以将文件放入云端硬盘，只是不列出它们。

我想你忘记了 .execute()

try:
    service = build('drive', 'v3', credentials=creds)

    # Call the Drive v3 API
    results = service.files().list(q="'" + topFolderId + "' in parents",
        pageSize=10, fields="nextPageToken, files(id, name)").execute()
    items = results.get('files', [])

    if not items:
        print('No files found.')
        return
    print('Files:')
    for item in items:
        print(u'{0} ({1})'.format(item['name'], item['id']))
except HttpError as error:
    # TODO(developer) - Handle errors from drive API.
    print(f'An error occurred: {error}')