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Date: Sat, 9 Nov 2013 06:44:50 +1100
Subject: Re: Count each unique element in list of lists
From: Chris Angelico <rosuav@gmail.com>
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Xref: csiph.com comp.lang.python:58844

On Sat, Nov 9, 2013 at 6:28 AM, Ya=C5=9Far Arabac=C4=B1 <yasar11732@gmail.c=
om> wrote:
> I want to write a code that
> shows that each elem in sublists of result on appears once in whole
> sublist in order to add it to
> my doctest.

So, to clarify the problem: You want to ensure that every element
occurs exactly once, neither more nor less? And you have a guarantee
that the lists and sublists have a specific nesting depth? Try this:

[sorted((x for l in result for x in l)) for result in results]

Flattens and sorts the lists.

[sorted((x for l in result for x in l))=3D=3Dlist(range(1,10)) for result
in results]

Flattens, sorts, and compares with a template list (which in this case
is [1, 2, 3, 4, 5, 6, 7, 8, 9] from range()).

ChrisA