상속 및 개체 복사본

Question

Derived 개체도 Base 개체의 데이터를 "상속"하고 싶습니다. 어떻게 수행됩니까?

#!python3 
#coding=utf-8 

class Base: 
    def __init__(self, attrib): 
     self.attrib = attrib 

listOfBaseObjects = [ 
    Base("this"), 
    Base("that"), 
    ] 

print(listOfBaseObjects) 

import copy 

class Derived(Base):      # ? 
    def __init__( self, baseObject,  # ? 
        otherattrib): 
     #Base.__init__(baseObject)   # ? 
     #self = copy.copy(baseObject)  # ? 
     self.otherattrib = otherattrib 

    def __repr__(self): 
     return "<Derived: {} {}>".format(self.attrib, self.otherattrib) 

listOfDerivedObjects = [ 
    Derived(listOfBaseObjects[0], "this"), 
    Derived(listOfBaseObjects[1], "that"), 
    ] 


print(listOfDerivedObjects) 
# AttributeError: 'Derived' object has no attribute 'attrib' 

Answer 1

"상속"에 대해서는 문제가되지 않지만 다른 개체의 데이터를 병합하기 만하면됩니다.

class Base: 
    def __init__(self, attrib): 
     self.attrib = attrib 

listOfBaseObjects = [ 
    Base("this"), 
    Base("that") 
    ] 

print(listOfBaseObjects) 

class Derived():       
    def __init__(self, baseObject, otherattrib): 
     for key, value in vars(baseObject).items(): 
      setattr(self, key, value) 
     self.otherattrib = otherattrib 

    def __repr__(self): 
     return "<Derived: {} {}>".format(self.attrib, self.otherattrib) 

listOfDerivedObjects = [ 
    Derived(listOfBaseObjects[0], "this"), 
    Derived(listOfBaseObjects[1], "that"), 
    ] 


print(listOfDerivedObjects)