Python Forum

There are couple of things:

- you should define instance of the class (like in my example >>> s = '123') or use class name

- '2 x TAB key' means pressing TAB key two times

It works as you can observe from attached screenshots.

Interactive interpreter:

[attachment=774]

Jupyter:

[attachment=775]

Thonny:

[attachment=776]

Thanks a Lot. I am lucky that I came in touch with u who got lots of patience to explain even minute details. Thanks again