Immutability

[Georg Brandl]

Nick Maclaren wrote:
> In article <mailman.7542.1151481315.27775.python-list at python.org>,
> Robert Kern <robert.kern at gmail.com> writes:
> |> Nick Maclaren wrote:
> |> > The way that I read it, Python allows only values (and hence types)
> |> > to be immutable, and not class members.  The nearest approach to the
> |> > latter is to use the name hiding conventions.
> |> > 
> |> > Is that correct?
> |> 
> |> You can also make properties that don't allow writing.
> |> 
> |> class Foo(object):
> |> 
> |>      def __init__(self, bar):
> |>          self._bar = bar
> |> 
> |>      @property
> |>      def bar(self):
> |>          return self._bar
> 
> Thanks very much.  And, what's more, I have even found its documentation!
> Whatsnew2.2.  The 2.4.2 reference is, er, unhelpful.

Is it?

http://docs.python.org/lib/built-in-funcs.html

documents "property" quite well.

Georg