On Thu, Jan 29, 2009 at 1:59 PM, Vicent <vgi...@gmail.com> wrote: > This is an easy question, I guess, but I am not able to find out the answer. > > In fact, it is both a Python question and a general programming "style" > question. > > I want to define a class that contains a list (or a NumPy array) of elements > of a certain type, and an integer: > > class ExampleList : > def __init__(self, list, position) : > self.list = list > self.position = position > > > This is clear to me. > > My first question, which is Python related: > > (1) Where are the right places to define PROPERTIES for my class, and how (I > mean, which is the right syntax) must I define them?
A note on terminology: In Python, what you are describing is called an attribute. 'property' has a very specific meaning, it is a way to associate a value with an instance that uses attribute notation for access, i.e. a.b, but actually uses a method call to get and set the value. In other words, it provides the flexibility of getters and setters with the notation of a plain attribute. Moreover, you can change a value from an attribute to a property without changing client code at all. This might be appropriate for your 1stpart and 2ndpart values. See http://personalpages.tds.net/~kent37/kk/00008.html http://docs.python.org/library/functions.html#property Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
