On Fri, Mar 6, 2009 at 11:26 AM, Wayne Watson <sierra_mtnv...@sbcglobal.net> wrote: > I've just got to stop using one letter for variables, especially ones that > sound alike! :-) > > Other than v tracking every value change made, did I gain anything by using > it? It seems to me that control variables are of marginal use. I might have > thought they were necessary for use with scale widgets, but I'm looking at > an example that says otherwise. Can you easily construct a simple example > where they are absolutely necessary, or at least provide a situation where > they are necessary?
You need a variable to get the state of a Checkbutton. Variables would be helpful if you had multiple controls displaying the same value. They might give a useful decoupling between the GUI and other clients of the data; they are a mini-model, in the Model-View-Controller sense. Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
