[Tutor] Calculating and returning possible combinations of elements from a given set

[ZUXOXUS]

Sharp thanks, but:

I try to reproduce the example from the table, but:

>>> import itertools
>>> combinations('ABC', 2)
Traceback (most recent call last):
  File "<pyshell#27>", line 1, in <module>
    combinations('ABC', 2)
NameError: name 'combinations' is not defined
>>>

If im not mistaken, it should return AB, AC, BA, etc.

I'm using Python 3.1


2010/7/28 Mark Lawrence <breamoreboy at yahoo.co.uk>

> On 27/07/2010 23:20, ZUXOXUS wrote:
>
>> Hi all pythoners
>>
>> I've got a probably easy to answer question.
>>
>> Say I've got a collections of strings, e.g.: 'man', 'bat', 'super',
>> 'ultra'.
>>
>> They are in a list, or in a sequence or whatever, say a bag of words
>>
>> And now I want to know how many couples I can do with them, and I want the
>> program to show me the actual couples: 'manman', 'manbat', 'mansuper',
>> 'manultra', 'batbat', 'batman', 'batsuper', etc.
>>
>> But hey, why building up new words from just two strings? I also want to
>> know the possible combinations of three words, four words, and perhaps,
>> why
>> not, five words.
>>
>> So, is it easy to do?
>>
>> Sorry, I'm new in programing, and am probably far from being a math-master
>>
>> I'm clueless, I think probably the code have some FOR I IN SEQUENCE... but
>> then what? I don't know how to say: take every element and paste it to
>> another one from the bag, and with another one, and with another one,...
>>
>> If it's too complex, I dont need the whole code recipe, just need some
>> clues, or perhaps a useful link
>>
>> Thank you very much in advance!
>>
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>
> The lazy way.
>
> http://docs.python.org/library/itertools.html
> Look for combinations().
>
> HTH.
>
> Mark Lawrence.
>
>
>
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