How to define a class inherited from the Zero class that allows you to modify the self._x variable

Question

This is my Zero class:

class ZeroClass():
    def __init__(self, x):
        self._x = x
    def __call__(self, w):
        return w * self._x

If I run the code below, it returns 500:

s = ZeroClass(100.)
print(s(5))

Now, I need to implement the class 'AdjustZero' allowing to change the variable self._x through xSet method

class AdjustZero(ZeroClass):
    def xSet():

How can this be done?

Answer 1

You just have to assign the variable like that. I assumed that your Zero class is just your Scale class.

class Scale:
    def __init__(self, x):
        self._x = x

    def __call__(self, w):
        return w * self._x


class AdjustZero(Scale):
    def xSet(self, x):
        self._x = x


s = AdjustZero(100.)
print(s(5))
s.xSet(10)
print(s(5))

The output is :

500.0
50