[Python] How to enforce a child class to set attributes using abstractproperty decorator in...

I want to enforce a Child class to set several attributes(instance variables), to achieve I am using abstractproperty decorator in python 2.7. Here is the sample code:

from abc import ABCMeta, abstractproperty
class Parent(object):
__metaclass__ = ABCMeta
@abstractproperty
def name(self):
pass

class Child1(Parent):
pass

class Child2(Parent):
name = 'test'

class Child3(Parent):
def __init__(self):
self.name = 'test'

obj_child1 = Child1()


Child1 object creation gives an error as expected.

obj_child2 = Child2()


Child2 object creation works fine as because abstract attribute 'name' is set

However

obj_child3 = Child3()


gives TypeError: Can't instantiate abstract class Child3 with abstract methods name

I did not understand:although the attribute 'name' is set in the init method, why the Child3 object creation is throwing type error.

My requirement is set attributes inside a method of child class. An explanation of what is wrong with child2 class and if there is a better way to enforce a child class to set attributes in a method will help me. Thanks in advance.

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