I have two public classes in Python. They are not nested. They have some private attributes and the second class has an object whose type is the first class. I need to access to the private attributes of the object I created inside the second class.
I'm not an expert in name mangling but I have read this example.
I have understood what the problem is, but I don't know how to solve it in my case, since I have one private attribute which is a instance of a public class with some private attributes that need to be accessed from other public class.
Let's clarify the exact problem with an example:
class First:
def __init__(self) -> None:
self.__size: ...
def __len__(self) -> int:
return self.__size
class Second:
def __init__(self, first: First) -> None:
self.__first = first
self.__size = __first.__size
def __len__(self) -> int:
return self.__size
When I run my tests I obtain some errors:
self.__size: = first._Second__first
^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'First' object has no attribute '_Second__first'
Changing self.__size = __first.__size to self.__size = first._First__size should correctly handle the name mangling and avoid giving you an error.