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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _join_path(self, hive, subkey):
 """ Joins the hive and key to make a Registry path. @type hive: int @param hive: Registry hive handle. The hive handle must be one of the following integer constants: - L{win32.HKEY_CLASSES_ROOT} - L{win32.HKEY_CURRENT_USER} - L{win32.HKEY_LOCAL_MACHINE} - L{win32.HKEY_USERS} - L{win32.HKEY_PERFORMANCE_DATA} - L{win32.HKEY_CURRENT_CONFIG} @type subkey: str @param subkey: Subkey path. @rtype: str @return: Registry path. """

        path = self._hives_by_value[hive]
        if subkey:
            path = path + '\\' + subkey
        return path