On Thu, Oct 19, 2006 at 10:41:27AM +0100, [EMAIL PROTECTED] wrote: > Hi > > just starting to get to grips with writing GUIs in Python using wxPython and > not being a computer scientist, have a philosophical question about the > "best" > way to pass data between various modules. For example, I anticipate having > one module to look after the GUI stuff where users can input data (either > from > the keyboard or file), another to process the data and (probably) a third to > display the calculation results. Just not sure what the most efficient way > of > passing data between the various modules. I can think of 4 ways to do this, > of which 1 is not possible in Python (I think). >
Ask yourself the following question: Does the data cohere or stick together in some way? For example, is a user entering information for a new member or a new account? If so, define a class that will serve as a container for this collection of related information, perhaps a class called AccountInfo. Now somewhere (in the GUI stuff, maybe), you will create an instance of the AccountInfo class and pass that instance between your modules. A slightly different need is where you want to share a *single* set of common values among several modules. An example might be a set of configuration values that are read from a config file at the application start-up. For this you could use a "config" module (config.py, say) containing variables that hold these values, and each module that needed access to these values could do "import config". Although, I suppose that a singleton class (a class intended to have only one instance) might be just as good, and would be more pleasing to the "object-orientated" among us. Dave [snip] -- Dave Kuhlman http://www.rexx.com/~dkuhlman _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
