bobrovskyserg

class nested(Coordinate):
    def __init__(self, x, y, parent=None):
        super().__init__(x, y)
        self.parent = parent

    def getX(self):
        if self.parent:
            return self.parent.x + self.x
        return self.x

class Base:
    def __init__(self):
        self.testfield = 'testfield'


class Child(Base):
    def __init__(self):
        super().__init__()  # рискни это закомментировать
        pass


a = Child()
print(a.testfield)

class Base(list):
    def __init__(self):
        self.testfield = 'testfield'


class Child(Base):
    def __init__(self, aname):
        super().__init__()
        self.name = aname


a = Child('lala')
print(a)
print(a.name)