human
Complete this python program:
def invalidate_table_constraints(func):
assistant
#Here is the Python program you requested.

    """For MySQL we grab all table constraints simultaneously, so this is
    effective.
    It further solves the issues of invalidating referred table constraints.
    """
    def _cache_clear(self, table, *args, **opts):
        db_name = self._get_setting('NAME')
        if (db_name in self._constraint_cache):
            del self._constraint_cache[db_name]
        if (db_name in self._reverse_cache):
            del self._reverse_cache[db_name]
        if (db_name in self._constraint_references):
            del self._constraint_references[db_name]
        return func(self, table, *args, **opts)
    return _cache_clear