python 调用super()初始化报错“TypeError: super() takes at least 1 argument”

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)”

python 调用super()初始化报错“TypeError: super() takes at least 1 argument”_第1张图片

原因是该方法调用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。

python 调用super()初始化报错“TypeError: super() takes at least 1 argument”_第2张图片

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”

python 调用super()初始化报错“TypeError: super() takes at least 1 argument”_第3张图片

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:

python 调用super()初始化报错“TypeError: super() takes at least 1 argument”_第4张图片

原文https://blog.csdn.net/u010812071/article/details/76038833

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