Classes, OOP, Tkinter general comments and detailed questions...

[Ron Stephens]

Thanks a ton!! It's really neat that you take the time to answer newbie's
questions. I already have bought your book, its great! (MY 11 year old son
is now using it to learn Python also ;-)))

I am making progress. Your tutorial is helpful. I am going to appreciate the
new gui section. Everyone on this list is so helpful...a great
community..thanks to all...

Alan Gauld wrote:

> Ron Stephens wrote:
> > I love Python. But I am having trouble getting to understand
> > classes well enough to use them. This is especially a
> > problem because I want to use Tkinter.
>
> Ok, This may or may not help. Try my online tutor.
>
> http://www.crosswinds.net/~agauld/
>
> Go straight to the "advanced" section (its not that advanced!)
> and work through the OO, event driven, and the (new) GUI
> programming
> topics.
>
> If you don't understand anything specific send me mail via
> the feedback link on the web pages and I'll do my best to
> explain....
>
> > Fortran in college (math and physics majors). Procedural programming
> > seems logical to me. Programs must follow the logic, and programs thus
> > can do only one thing.
>
> Sounds like the event driven nature of OOP/GUI work is what's
> really confusing you not OOP as such. Think of event driven
> as being like interriupt driven in assembler... an event
> arrives somewhat like a hardware interrupt and causes an
> event handler to fire - just like an intrrupt handler in
> assembler.
>
> > seems to me that the coder just made up some stuff that he felt might
> > work, and it did, almost magically. This bothers me.
>
> It can take a bit of adjustment. But in essence you are right.
> The flow of control is removed from the programmer and put
> in the hands of the GUI environment and the user.
>
> HTH,
>
> Alan g