def close(self):
		'''关闭与数据库的连接'''
		if VERBOSE:
			print 'Database connection CLOSE.'
		self.conn.close()
def test_between():
    """Greater than or equal to y and less than z."""
    p = are.between(3, 4)
    ps = [p(x) for x in range(1, 6)]
    assert ps == [False, False, True, False, False]