dictionary issue (and maybe PEP ... depending on the answer)

Ian Bicking ianb at colorstudy.com
Wed Jun 4 06:04:22 CEST 2003


On Mon, 2003-06-02 at 00:45, dsavitsk wrote:
> never mind, for now, that there are proably better ways to do what the 
> dict obviously does.  anyhow, I get a list of the months by doing this
> 
>  >>> [_months[i] for i in _months.keys()]

Now what I'd like is:

[m for m, i in _months.items() sortby i]

Such an addition to list comprehension would make everyone who doesn't
like the sort method happy, plus it's just a much better way to express
sorting, so you could do things like:

[p for p in people sortby p.lastname, p.firstname]

instead of:

l = people[:]
l.sort(lambda a, b: cmp((a.lastname, a.firstname), 
                        (b.lastname, b.firstname))








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