#!/usr/bin/env python3

# MIT License
#
# Copyright (c) 2023 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

class A():
    style = {'a':123, 'b':123}
    def __init__(self) -> None:
        print(f"{self.__class__.__name__} : {self.style=} , {A.style=}")

class B(A):
    style = A.style | {'b':456, 'c':456}
    def __init__(self) -> None:
        print(f"{self.__class__.__name__} : {self.style=} , {B.style=}")

class C(B):
    style = B.style | {'a':789, 'c':789}
    def __init__(self) -> None:
        print(f"{self.__class__.__name__} : {self.style=} , {C.style=}")

a = A()
b = B()
c = C()