以下是如何修改_create_from_x_y方法:
from abc import ABC
class A(ABC):
def __init__(self, x, y):
self._x = x
self._y = y
@classmethod
def _complex_initialization(cls, k, l, m, n):
pass
class B(A):
def __init__(self, k, l, m, n):
x, y = self._complex_initialization(k, l, m, n)
super().__init__(x, y)
@classmethod
def _create_from_x_y(cls, x, y):
# Create new instance of B without calling its constructor
obj = cls.__new__(cls)
# Calling the constructor of A with the instance of B
A.__init__(obj, x, y)
return obj