Python - 无法使用 Google Drive API 从 Google Drive 下载文件

Question

我一直在尝试使用 Google Drive API 自动从 Google Drive 下载一些文件，并选择使用 Python 3.6.5 来执行此操作。

一开始，我按照quickstart sample (效果很好)然后移至 download files sample ，这就是头痛开始的时候。首先，我只是在下面的代码中“融合”了两个示例:

from __future__ import print_function
from apiclient import discovery
from googleapiclient.discovery import build
from httplib2 import Http
from oauth2client import file, client, tools
import io
# from oauth2client import client
# from oauth2client import tools

SCOPES = 'https://www.googleapis.com/auth/drive.metadata.readonly'

def main():


    store = file.Storage('token.json')
    creds = store.get()
    if not creds or creds.invalid:
        flow = client.flow_from_clientsecrets('credentials.json', SCOPES)
        creds = tools.run_flow(flow, store)
    service = build('drive', 'v3', http=creds.authorize(Http()))

    file_id = 'myfileID'
    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 "Download %d%%." % int(status.progress() * 100)


if __name__ == '__main__':
    main()

但它不起作用，Python 无法识别 MediaIoBaseDownload。然后我继续执行以下代码:

from __future__ import print_function
from apiclient import discovery
from googleapiclient.discovery import build
from httplib2 import Http
from oauth2client import file, client, tools
import io
# from oauth2client import client
# from oauth2client import tools

SCOPES = 'https://www.googleapis.com/auth/drive.metadata.readonly'

def main():


    store = file.Storage('token.json')
    creds = store.get()
    if not creds or creds.invalid:
        flow = client.flow_from_clientsecrets('credentials.json', SCOPES)
        creds = tools.run_flow(flow, store)
    service = build('drive', 'v3', http=creds.authorize(Http()))

    file_id = 'myfileID'
    request = service.files().get_media(fileId=file_id)

    fh = io.BytesIO()
    with open('mydestinationFile', 'wb') as f:
        f.write(request)

    done = False
    while done is False:
        status, done = downloader.next_chunk()
        print("Download %d%%." % int(status.progress() * 100))


if __name__ == '__main__':
    main()

现在出现错误:

Traceback (most recent call last):
  File "Google API.py", line 50, in <module>
    main()
  File "Google API.py", line 32, in main
    f.write(request)
TypeError: a bytes-like object is required, not 'HttpRequest'

我用谷歌搜索了它，甚至在这里搜索了SO，但找不到类似的东西。我知道我做了一些严重错误的事情，但无法确切地说出什么。

Answer 1

MediaIoBaseDownload 是 googleapiclient.http 类中的一个方法，因此您可以在代码中包含以下行来解决此问题:

from googleapiclient.http import MediaIoBaseDownload

我解决了这部分问题，但我仍然可以下载文件。