def insertDomain(self, domain, indegree=0, outdegree=0):
		'''增加一个域名'''
		cur = self.conn.cursor()
		cur.execute("INSERT INTO Domains VALUES (NULL,?,?,?)", (domain, indegree, outdegree))
		# 写入到文件中
		self.conn.commit()
def test_base_class_get_change_list_for_accepting_suggestion_raises_error(
            self):
        with self.assertRaisesRegex(
            NotImplementedError,
            'Subclasses of BaseSuggestion should implement '
            'get_change_list_for_accepting_suggestion.'):
            self.base_suggestion.get_change_list_for_accepting_suggestion()