def _get_gcloud_sdk_credentials():
    """Gets the credentials and project ID from the Cloud SDK."""
    from google.auth import _cloud_sdk

    # Check if application default credentials exist.
    credentials_filename = (
        _cloud_sdk.get_application_default_credentials_path())

    if not os.path.isfile(credentials_filename):
        return None, None

    credentials, project_id = _load_credentials_from_file(
        credentials_filename)

    if not project_id:
        project_id = _cloud_sdk.get_project_id()

    return credentials, project_id
Gets the credentials and project ID from the Cloud SDK.