Re: How to compare lists

Newsgroups	comp.lang.python
Date	2015-09-01 10:26 -0700
References	<mailman.38.1441092235.23514.python-list@python.org>
Message-ID	<0abed2f9-927e-47b7-ae3a-b13209e415c8@googlegroups.com> (permalink)
Subject	Re: How to compare lists
From	Rustom Mody <rustompmody@gmail.com>

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On Tuesday, September 1, 2015 at 12:54:08 PM UTC+5:30, Jahn wrote:
> 1.
> How can I save 256 lists, each list has 32 values( hexadecimal numbers)
> 2.
> How to compare the saved lists with another 256 lists ( that are read online and have the 
> same structure as the list one)?
> ( the first list must be saved in the  previous step)

To add to what the others have said/asked:

Many times programmers want sets but they are programmed(!!) to think "Lists!"
This can be because for example
>>> [1,2,3] == [2,1,3]
False
>>> {1,2,3} == {2,1,3}
True
>>> [1,2,3,3] == [1,2,3]
False
>>> {1,2,3,3} == {1,2,3}
True
>>> list(set([1,2,1,3,4,4,]))
[1, 2, 3, 4]

[Though theres no guarantee of the order of the last (that I know) ]

ie you may prefer sets to lists when order and/or repetition dont signify

> 
> E.g

???

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Thread

How to compare  lists "Jahn" <jana1972@centrum.cz> - 2015-09-01 07:08 +0200
  Re: How to compare  lists Denis McMahon <denismfmcmahon@gmail.com> - 2015-09-01 11:58 +0000
  Re: How to compare  lists Rustom Mody <rustompmody@gmail.com> - 2015-09-01 10:26 -0700

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