如何从Google Drive读取txt文件？

from googleapiclient.discovery import build
from google.oauth2 import service_account

# 身份验证
credentials = service_account.Credentials.from_service_account_file(
    'path/to/your/keyfile.json',
    scopes=['https://www.googleapis.com/auth/drive']
)

# 创建Drive服务实例
drive_service = build('drive', 'v3', credentials=credentials)

# 列出Google Drive中的文件
response = drive_service.files().list(
    q="mimeType='text/plain'",
    fields="files(id, name)"
).execute()

files = response.get('files', [])
if not files:
    print('No files found.')
else:
    print('Files:')
    for file in files:
        print(f"{file['name']} ({file['id']})")

# 获取文件内容
file_id = 'your_file_id'
request = drive_service.files().get_media(fileId=file_id)
fh = open('path/to/save/file.txt', 'wb')
media_request = http.MediaIoBaseDownload(fh, request)

while True:
    try:
        download_progress, done = media_request.next_chunk()
    except errors.HttpError as error:
        print(f"An error occurred: {error}")
        break
    if download_progress:
        print(f"Download progress: {int(download_progress.progress() * 100)}%")
    if done:
        print("Download complete.")
        break

fh.close()