Combining sets/dictionaries

Alfons Nonell-Canals alfons.nonell at upf.edu
Tue Sep 22 16:24:44 CEST 2009


Hello,
finally I've solved it using a "combinatorics" library which allows to
do this kind of things.

Here, here is an example:

   
http://automatthias.wordpress.com/2007/04/28/cartesian-product-of-multiple-sets/


Thanks for your suggestions.


Regards,
Alfons.

Carl Banks wrote:
> On Sep 22, 3:08 am, Alfons Nonell-Canals <alfons.non... at upf.edu>
> wrote:
>   
>> Hello,
>> I have different sets/dictionaries/lists (whatever you want because I
>> can convert them easily) and I would like to combine them. I don't want
>> a consensus and something like it. I'd need to combine all elements of
>> the first one with the all elements of the second one and third,... the
>> numbers of dictionaries/sets/lists is variable as the number of elements
>> for each one.
>>
>> For example, i have the following sets and I would like to obtain all
>> possible combinations...
>>
>> ['I', 'O', 'N', 'P', 'S', 'C']
>> ['I', 'O', 'N', 'P', 'S', 'C']
>> ['I', 'O', 'N', 'P', 'S', 'C']
>> ['I', 'N', 'P', 'S', 'C']
>> ['I', 'N', 'P', 'S', 'C']
>> ['F', 'I', 'L', 'O', 'N', 'P', 'S', 'R', 'C']
>> ['I', 'O', 'N', 'P', 'S', 'C']
>> ['I', 'O', 'N', 'P', 'S', 'C']
>> ['F', 'I', 'L', 'O', 'N', 'P', 'S', 'R', 'C']
>>     
>
> This is the input.  What do you want the output to look like given
> this input?
>
> I can't really tell exactly what you mean by "all combinations", there
> are different ways to combine sequences, and it doesn't sound like you
> mean the formal mathematical definition of "combination".
>
> My best guess is that you want something like this.
>
> def all_union(seqs):
>     s = set()
>     for seq in seqs:
>         s.update(seq)
>     return s
>
>
> Carl Banks
>   

-- 
------------
Alfons Nonell-Canals, PhD
Chemogenomics Lab
Research Group on Biomedical Informatics (GRIB) - IMIM/UPF
Barcelona Biomedical Research Park (PRBB)
C/ Doctor Aiguader, 88 - 08003 Barcelona 
alfons.nonell at upf.edu - http://cgl.imim.es
Tel. +34933160528
 
http://alfons.elmeuportal.cat
http://www.selenocisteina.info




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