"Inherit" class attributes to instance attributes

class_attr.py

class Params:

    def __init__(self):
        self.attr1 = self.attr1

    @classmethod
    def ret_attr1(cls):
        return cls.attr1


Params.attr1 = "yuhuhu"

p2 = Params()
Params.attr1 = "gnegne"
p2attr = p2.ret_attr1()  # gnegne
p2attr_inst = p2.attr1  # yuhuhu
debug = True