Às 09:20 de 07/01/21, Terry Reedy escreveu: > On 1/7/2021 2:42 AM, Christian Gollwitzer wrote: >> Am 07.01.21 um 08:29 schrieb Paulo da Silva: >> >>> Does anybody know why cmd method isn't called when I change the button >>> state (clicking on it) in this example? >>> I know that this seems a weird class use. But why doesn't it work? >>> Thanks. >>> >>> class C: >>> from tkinter import Checkbutton >>> import tkinter >>> >>> @staticmethod >> ^^it works if you remove the staticmethod here > > staticmethods are essentially useless in Python. What little was gained > by their addition is partly offset by the introduced confusion. It depends on what the classes are being used for. Sometimes I just want to use them as static wrappers. Of course I could use them in the conventional way for this purpose, but it's not so clean :-) ...
> > Classmethods also do not work as is. By experiment, the following works. > cb=Checkbutton(command=lambda: C.cmd.__func__(C)) Why not just cb=Checkbutton(command=lambda : C.cmd()) ? Also works. BTW, just for curiosity, and for my personal learning ... What does "__func__" does? Thank you. -- https://mail.python.org/mailman/listinfo/python-list