> From: p.f.mo...@gmail.com> Subject: Re: Does Python3 offer a FrozenDict?>
> Date: Tue, 16 Dec 2008 09:56:57 -0800> To: python-list@python.org> > On 16
> Dec, 17:28, bearophileh...@lycos.com wrote:> > Johannes Bauer:> >> > > is
> there anything like a frozen dict in Python3, so I could do a> > > foo = {
> FrozenDict({"a" : "b"}): 3 }> >> > You can adapt this code to Python3 (and
> post a new recipe? It may be> > positive to create a new section of the
> Cookbook for Py3 only):http://code.activestate.com/recipes/414283/> > There's
> actually only tiny changes needed (I believe)> - Change exception syntax:
> raise AttributeError("A frozendict cannot> be modified.")> - (bugfix for the
> original version): add **kw arg to __new__ (passed> to dict.__init__)> >
> Simple testing looks OK. And the resulting code is OK for both 2.x and> 3.0.>
> > Moral - don't assume that all code needs to be rewritten for Python> 3.0
> :-)> > Paul.> > PS I imagine that 2to3 would have fixed this up fine, but it
> was so> easy to do by hand that I didn't bother :-)> -->
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