使用驱动器API下载文件。

应该可以利用Python官方文档中的示例来下载文件。我有一个基于它的代码，允许我下载图像：

from __future__ import print_function

import os.path
import requests
import io
from google.auth.transport.requests import Request
from google.oauth2.credentials import Credentials
from google_auth_oauthlib.flow import InstalledAppFlow
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError
from googleapiclient.http import MediaFileUpload
from googleapiclient.http import MediaIoBaseDownload

# If modifying these scopes, delete the file token.json.
SCOPES = ['https://www.googleapis.com/auth/drive']

def creds():
    creds = None

    if os.path.exists('token.json'):
        creds = Credentials.from_authorized_user_file('token.json', SCOPES)
    if not creds or not creds.valid:
        if creds and creds.expired and creds.refresh_token:
            creds.refresh(Request())
        else:
            flow = InstalledAppFlow.from_client_secrets_file(
                'credentials.json', SCOPES)
            creds = flow.run_local_server(port=0)
        with open('token.json', 'w') as token:
            token.write(creds.to_json())
    return creds
    

def download(creds, real_file_id):
    try:
         # create drive api client
        service = build('drive', 'v3', credentials=creds)

        file_id = real_file_id

        # pylint: disable=maybe-no-member
        request = service.files().get_media(fileId=file_id)
        file = io.BytesIO()
        downloader = MediaIoBaseDownload(file, request)
        done = False
        while done is False:
            status, done = downloader.next_chunk()
            print(F'Download {int(status.progress() * 100)}.')

    except HttpError as error:
        print(F'An error occurred: {error}')

    return file.getvalue()

if __name__ == '__main__':

    file = open("test.jpg","wb")
    file.write(download(creds(), "ID of the Image"))

您只需要拥有要下载的文件的ID，并将其粘贴到示例代码的末尾进行测试。
确保已创建凭据并按照快速入门流程在Python下安装Google云端硬盘。

参考资料：

• https://developers.google.com/drive/api/quickstart/python
• https://developers.google.com/drive/api/guides/manage-downloads#python