VideosSampleCode/videos/112_python_name_mangling/intended_purpose.py at master · mCodingLLC/VideosSampleCode · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
import pprint


class Widget:
    __count = 0  # _Widget__count

    def __init__(self):
        super().__init__()
        self.__count = Widget.__count
        Widget.__count += 1

    @property
    def widget_id(self):
        return self.__count

    @staticmethod
    def total_widgets_created():
        return Widget.__count


class Button(Widget):
    def __init__(self):
        super().__init__()
        self.__count = 0  # _Button_count

    def click(self):
        self.__count += 1

    def total_clicks(self):
        return self.__count


def main():
    print(Widget.total_widgets_created(), "widgets")

    b = Button()

    print(Widget.total_widgets_created(), "widgets")

    print(b.total_clicks(), "clicks")
    b.click()
    b.click()

    print(b.total_clicks(), "clicks")
    print(Widget.total_widgets_created(), "widgets")

    pprint.pprint(b.__dict__)


if __name__ == '__main__':
    main()