Does provided path exist on S3?

def exists(self, path):
        """
        Does provided path exist on S3?
        """
        (bucket, key) = self._path_to_bucket_and_key(path)

        # root always exists
        if self._is_root(key):
            return True

        # file
        if self._exists(bucket, key):
            return True

        if self.isdir(path):
            return True

        logger.debug('Path %s does not exist', path)
        return False