sanelson at gmail.com
Mon Feb 5 23:22:04 CET 2007
On 2/5/07, Steve Nelson <sanelson at gmail.com> wrote:
> What I want to do is now "group" these urls so that repeated urls have
> as their "partner" a lsit of indexes. To take a test example of the
> method I have in mind:
> def testGrouper(self):
> """Group occurences of a record together"""
> test_list = [('fred', 1), ('jim', 2), ('bill', 3), ('jim', 4)]
> grouped_list = [('fred', 1), ('jim', [2, 4]), ('bill' ,3)]
> self.assertEqual(myGroup(test_list), grouped_list)
> I would like a clearer, more attractive way of
> making the test pass. If this can be done in functional style, even
I now have:
return [(key, map(lambda item: item, list(group))) for key, group
in groupby(sorted(stuff), lambda item: item )]
Not sure I fully understand how groupby objects work, nor what a
sub-iterator is, though. But I more or less understand it.
I understand I could use itemgetter() instead of the lambda...
Can anyone clarify?
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