创建只读属性对象的方法(ReadOnlyObject)

def readonlyObject(**args):
    dictBI = {}
    args_n = []
    for name, val in args.items():
        dictBI[name] = val
        args_n.append(name)
    dictBI['__slots__'] = args_n
    return type('ReadOnlyObject', (object,), dictBI)()