Overloading virtual method of widget without inheriting (PyQt)

[Alex Gusarov]

>    class MyPaintCell(PaintCell):
>       def paintcell(self):
>           PaintCell.paintcell(self)
>           myPaintCell(self)
>
>    (hmm, only 4 lines, I overestimated the cost. Sorry)

Yeah, that's funny..

I don't want to do it 'cause I create my form within Designer and
simply drop Calendar widget to it. Then I need to translate it
into .py file, it's OK. But if I want to use a custom derived from
Calendar class instead of it, I need after every refreshing/
translating of form replace few lines in translated file.

I just want to know about existence of other method to do this in
class, that contain instance of Calendar.

By "this" I mean:
Instead of calling original method "paintcell" alone, call it with my
custom metod.

Anyway, thanks.