testing if a list contains a sublist

Peter Otten __peter__ at web.de
Tue Aug 16 09:44:13 CEST 2011


Johannes wrote:

> what is the best way to check if a given list (lets call it l1) is
> totally contained in a second list (l2)?
> 
> for example:
> l1 = [1,2], l2 = [1,2,3,4,5] -> l1 is contained in l2
> l1 = [1,2,2,], l2 = [1,2,3,4,5] -> l1 is not contained in l2
> l1 = [1,2,3], l2 = [1,3,5,7] -> l1 is not contained in l2
> 
> my problem is the second example, which makes it impossible to work with
> sets insteads of lists. But something like set.issubset for lists would
> be nice.

Would [1, 2, 1] be contained in [1, 1, 2]? You have received an answer that 
assumes yes and another that assume no.




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