[Tutor] Comparing lists

[Terje Johan Abrahamsen]

I am trying to find out if there is some number that exists in both lists. 
It doesn't matter if they are in the same place or not. I just want to find 
if some number exists in both lists, or if all numbers differs from all 
numbers in the other list.


>Are you trying to find out if 34 (or whatever else) exists in both lists
>*at all* or in the same place?
>
> >>> lista = [34, 42, 13]
> >>> listb = [42, 13, 34]
>
>These two lists, for instance, contain all the same values, but they are
>not identical due to the placement of the 34.
>
> >>> if lista == listb:
>	print 'equal'
>elif lista != listb:
>	print 'inequal'
>
>
>inequal
>
>Rob
>http://uselesspython.com
>
>Terje Johan Abrahamsen wrote:
>
>>I have two lists of different length. Actually each list can differ in
>>lenght every time. For example lista = [12, 34, 56] & listb = [14, 16,
>>34, 81]. What I now need to do is to check if the lists have one or more
>>common numbers. In this case 34 exists in each list. Then I would like
>>the function to somehow indicate this. Does it exist a simple way to do
>>this? I have made a somehow functioning function that does this, but it
>>is probably about 50-60 lines. (If lista[0] == listb[0], if lista[1] ==
>>listb[0] and so forth....)
>>
>>Any suggestions?
>>
>>Thanks,
>>Terje
>>
>>
>>
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>
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>
>
>
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