google-auth is the Google authentication library for Python. This library
provides the ability to authenticate to Google APIs using various methods. It
also provides integration with several HTTP libraries.

- Support for Google Application Default Credentials.
- Support for signing and verifying JWTs.
- Support for Google Service Account credentials.
- Support for Google Compute Engine credentials.
- Support for Google App Engine standard credentials.
- Support for various transports, including Requests, urllib3, and gRPC.

WWW: https://github.com/googleapis/google-auth-library-python