def close(self):
		'''关闭与数据库的连接'''
		if VERBOSE:
			print 'Database connection CLOSE.'
		self.conn.close()
def test_should_encode_node_with_label(self):
        a = Node("Person")
        encoded = cypher_repr(a, node_template="{labels} {properties}")
        assert encoded == u"(:Person {})"