一、实验环境
1.Windows7x64_SP1
2.Anaconda2.5.0 + python2.7(anaconda集成,不需单独安装)
二、实验步骤
2.1 在python中有如下代码:
class father(): def __init__(self,age): self.age = age; def get_age(self): print(self.age); class son(father): def __init__(self,age): super().__init__(age); self.toy_number = 5; def get_toy_number(self): print(self.toy_number); myson = son(6) myson.get_age() myson.get_toy_number()
运行时报错:“TypeError: super() takes at least 1 argument(0 given)”
2.2 原因分析
该方法调用super()为在python3中的方法,而此是在python2中运行的,在python3中运行将正常。
在《python编程:从入门到实践》一书中介绍了若想在python2中运行需将
super().__init__(age)
一句改为:
super(son, self).__init__(age)
但我按此方法改后,运行时报错:“TypeError: super() argument 1 must be type, not classobj”
2.3 解决方式
上网查询资料后,得知若想要在python2中运行成功,可以改为如下两种方法:
方法一
class father(object): def __init__(self,age): self.age = age; def get_age(self): print(self.age); class son(father): def __init__(self,age): super(son, self).__init__(age); self.toy_number = 5; def get_toy_number(self): print(self.toy_number); myson = son(6) myson.get_age() myson.get_toy_number()
方法二
class father(): def __init__(self,age): self.age = age; def get_age(self): print(self.age); class son(father): def __init__(self,age): father.__init__(self,age);#注意此处参数含self self.toy_number = 5; def get_toy_number(self): print(self.toy_number); myson = son(6) myson.get_age() myson.get_toy_number()
运行后都将得到正确答案:
参考链接:https://stackoverflow.com/questions/9698614/super-raises-typeerror-must-be-type-not-classobj-for-new-style-class
原文请参考:https://blog.csdn.net/u010812071/article/details/76038833
原文地址:https://www.cnblogs.com/hester/p/11311208.html
时间: 2024-10-04 12:30:17