Re: Function to Add List Elements?

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  • Chris Rebert

    Re: Function to Add List Elements?

    On Wed, Oct 22, 2008 at 12:59 PM, Henry Chang <goldspin@gmail .comwrote:
    This seems like a simple problem, but I can't find a simple solution.
    >
    Suppose I have two lists of integers.
    >
    List A = [A1, A2, A3]
    List B = [B1, B2, B3]
    >
    I just simply want a new list, such as:
    >
    List C = [C1, C2, C3]
    >
    where:
    >
    C1 = A1 + B1
    C2 = A2 + B2
    C3 = A3 + B3
    >
    Is there a simple function to do this?
    A one-liner in fact:

    summed = [sum(pair) for pair in zip(listA, listB)]

    Explanation: pairs up the elements of listA and listB, sums each pair,
    constructs a list of the sums.

    Cheers,
    Chris
    --
    Follow the path of the Iguana...

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