def _database_default_options(self, name):
        """Get a Database instance with the default settings."""
        return self.get_database(
            name, codec_options=DEFAULT_CODEC_OPTIONS,
            read_preference=ReadPreference.PRIMARY,
            write_concern=DEFAULT_WRITE_CONCERN)
Get a Database instance with the default settings.
stackoverflow/venv/lib/python3.6/site-packages/pymongo/mongo_client.py