The function below was used in a Discord bot of mine to download the required audio files when deploying on Heroku. It works by getting all of the files in a specific folder by its ID and then downloads them one by one, saving each to a file.
The function loads the Google credentials from an environmental variable, but you can load from a file directly by using from_service_account_file instead.
import googleapiclient.discovery
from google.oauth2 import service_account
from googleapiclient.http import MediaIoBaseDownload
from io import BytesIO
from json import loads
from os import getenv
# google drive api setup snippet
scopes = ['https://www.googleapis.com/auth/drive']
service_account_file = loads(getenv('GOOGLE_APPLICATION_CREDENTIALS'))
credentials = service_account.Credentials.from_service_account_info(
service_account_file, scopes=scopes)
drive = googleapiclient.discovery.build('drive', 'v3', credentials=credentials)
def download_folder(folder_id):
files = drive.files().list(q="'{}' in parents".format(folder_id))
.execute().get('files', [])
if files is []:
print('google drive api returned empty folder, check api or permissions')
else:
print('google drive files found, downloading')
for file in files:
if file.get('id', None) is None or file.get('name', None) is None:
continue
print('downloading audio file: ' + file.get('name'))
req = self.drive.files().get_media(fileId=file.get('id'))
fh = BytesIO()
downloader = MediaIoBaseDownload(fh, req)
done = False
while not done:
(_, done) = downloader.next_chunk()
with open(file.get('name'), 'wb') as audio_file:
audio_file.write(fh.getbuffer())