# Re: sum for sequences?

*From*: Paul Rubin <no.email@xxxxxxxxxxxxxx>*Date*: Wed, 24 Mar 2010 16:19:19 -0700

kj <no.email@xxxxxxxxxxx> writes:

Is there a sequence-oriented equivalent to the sum built-in? E.g.:

seq_sum(((1, 2), (5, 6))) --> (1, 2) + (5, 6) --> (1, 2, 5, 6)

use itertools.chain for this. A few people have mentioned that sum will

also work, but I think for that purpose it could have O(n**2)

complexity.

.

**Follow-Ups**:**Re: sum for sequences?***From:*Steve Howell

**References**:**sum for sequences?***From:*kj

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