python类__dict__克隆对象属性的用法

Question

EDIT Clarification: While I do appreciate the corrections/suggestions for deep copy that are already posted, this question is mainly about usage of __dict__ method of class, and whether cloning object attrs using init this way is okay.

Is there any issue with this usage of init for copying object attrs, better way to achieve this?

class CopyClass(obj):
    def __init__(self, obj1):
        super().__init__()
        self.__dict__ = obj1.__dict__.copy()

obj2 = CopyClass(obj1)

Answer 1

You can simply use copy.deepcopy() .

from copy import deepcopy

obj = Foo()  # Foo is some random class
obj_copy = deepcopy(obj)