Basically replacing this

class A:
    def __init__(self, b, c, d, e):
        self.b = b
        self.c = c
        self.d = d
        self.e = e

by

class A:
    def __init__(self, b, c, d, e):
        # You can edit parameters' value here before they are being stored
       
        for k, v in vars().items():
            setattr(self, k, v)


By me.