def getrange(self, key_prefix, strip=False):
        """
        Get a range of keys starting with a common prefix as a mapping of
        keys to values.

        :param str key_prefix: Common prefix among all keys
        :param bool strip: Optionally strip the common prefix from the key
            names in the returned dict
        :return dict: A (possibly empty) dict of key-value mappings
        """
        self.cursor.execute("select key, data from kv where key like ?",
                            ['%s%%' % key_prefix])
        result = self.cursor.fetchall()

        if not result:
            return {}
        if not strip:
            key_prefix = ''
        return dict([
            (k[len(key_prefix):], json.loads(v)) for k, v in result])
Get a range of keys starting with a common prefix as a mapping of
        keys to values.

        :param str key_prefix: Common prefix among all keys
        :param bool strip: Optionally strip the common prefix from the key
            names in the returned dict
        :return dict: A (possibly empty) dict of key-value mappings