Hey there! Let's tackle your two main issues: getting rid of that frustrating "app not verified" warning when using PyDrive, and successfully uploading large files to Google Drive via Python. I'll cover both PyDrive fixes and a reliable alternative using Google's official API library.

Fixing PyDrive's "App Not Verified" Warning #

That warning pops up because Google hasn't verified your OAuth app for public use. Here are two solid workarounds:

1. Add Test Users to Your OAuth App (For Personal/Testing Use) #

If you're just using the app for yourself or a small team, full verification isn't necessary:

• Head to the Google Cloud Console and open your project.
• Navigate to APIs & Services > OAuth consent screen.
• Select "External" as the user type, then fill in the required basic info.
• Scroll to the Test users section, add your email address (and any others who need access), then save.
• Regenerate your OAuth credentials (download the new client_secrets.json file) and replace the old one in your PyDrive setup.

Now when you authenticate, the warning will disappear for the added test users.

2. Use a Service Account (For Server/Automated Workflows) #

Service accounts skip user-facing OAuth consent entirely, making them perfect for automated scripts:

• In the Google Cloud Console, go to IAM & Admin > Service Accounts.
• Create a new service account, download the JSON key file (save it as service_account.json).
• Update your PyDrive auth code to use the service account:

from pydrive.auth import GoogleAuth
from pydrive.drive import GoogleDrive

gauth = GoogleAuth()
gauth.auth_method = 'service'
gauth.service_account_email = 'your-service-account-email@your-project.iam.gserviceaccount.com'
gauth.service_account_key_file = 'service_account.json'
gauth.ServiceAuth()

drive = GoogleDrive(gauth)

Note: Files uploaded via service account go to the service account's own Drive. To access them from your personal Drive, share a folder with the service account email and upload files to that folder.

Uploading Large Files with PyDrive #

By default, PyDrive might struggle with large files (over a few hundred MB). Enable chunked uploads to fix this:

# After setting up auth as above...
large_file = drive.CreateFile({'title': 'my_large_file.zip'})
# Set chunksize to 10MB (adjust based on your network stability)
large_file.SetContentFile('my_large_file.zip', chunksize=1024*1024*10)
large_file.Upload()

print(f"Upload complete! File ID: {large_file['id']}")

The chunksize parameter splits the file into smaller pieces, preventing timeouts and allowing resumable uploads if the connection drops.

Alternative: Use Google's Official google-api-python-client #

For more control over large file uploads, Google's official library is a robust choice. It supports resumable chunked uploads natively:

Step 1: Install the Library #

pip install google-api-python-client google-auth-httplib2 google-auth-oauthlib

Step 2: Resumable Chunked Upload Code #

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

# Configure scopes (adjust based on your access needs)
SCOPES = ['https://www.googleapis.com/auth/drive.file']
SERVICE_ACCOUNT_FILE = 'service_account.json'

# Authenticate with service account
credentials = service_account.Credentials.from_service_account_file(
    SERVICE_ACCOUNT_FILE, scopes=SCOPES)
drive_service = build('drive', 'v3', credentials=credentials)

# Set up file metadata and media upload
file_metadata = {'name': 'my_huge_file.iso'}
# 10MB chunks, resumable=True allows pausing/resuming mid-upload
media = MediaFileUpload('my_huge_file.iso', chunksize=1024*1024*10, resumable=True)

# Start upload with progress tracking
request = drive_service.files().create(body=file_metadata, media_body=media)
response = None

while response is None:
    status, response = request.next_chunk()
    if status:
        print(f"Upload progress: {int(status.progress() * 100)}%")

print(f"Upload finished! File ID: {response.get('id')}")

This method is ideal for very large files (1GB+) and gives you real-time visibility into upload progress.

Final Notes #

• If you prefer user-facing OAuth instead of service accounts with the official library, use google-auth-oauthlib.flow.InstalledAppFlow for local authentication.
• Double-check that your file paths are correct and you have enough storage space in your Google Drive.

内容的提问来源于stack exchange，提问作者mister