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Date: Thu, 15 Dec 2011 12:20:10 -0600
From: Tim Chase <python.list@tim.thechases.com>
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To: Python <python-list@python.org>
Subject: Re: test for list equality
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Cc: Miki Tebeka <miki.tebeka@gmail.com>
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:17297

On 12/15/11 11:59, Miki Tebeka wrote:
>> My sort issue... as in this doesn't work
>>>>> if x.sort == y.sort:
> You're missing the () to make it a function call.
> Also list.sort() returns none, it mutates the original list.
> You can either
>      sorted(x) == sorted(y)
> or
>      set(x) == set(y)

Duplicates cause issues in the set() version:

   a = [1,2,3,4]
   b = a + a
   print sorted(a) == sorted(b) # False
   print set(a) == set(b) # True

They mean different things, and the OP may want one or the other 
depending on how they want to consider duplicates.

-tkc