On Jun 8, 4:43 pm, Ben Finney <ben+pyt...@benfinney.id.au> wrote: > m...@pixar.com writes: > > Is there any reason to prefer one or the other of these statements? > > > if e.message.code in [25401,25402,25408]: > > if e.message.code in (25401,25402,25408): > > > I'm currently using [], but only coz I think it's prettier > > than (). > > Use a list when the semantic meaning of an item doesn't depend on all > the other items: it's “only” a collection of values. > > Your list of message codes is a good example: if a value appears at > index 3, that doesn't make it mean something different from the same > value appearing at index 2. > > Use a tuple when the semantic meaning of the items are bound together, > and it makes more sense to speak of all the items as a single structured > value.
If you want to go strictly by the book, I would say he ought to be using a set since his collection of numbers has no meaningful order nor does it make sense to list any item twice. I don't think it's very important, however, to stick to rules like that for objects that don't live for more than a single line of code. Carl Banks -- http://mail.python.org/mailman/listinfo/python-list
