sum up numbers in a list
c james
cjames at callone.net
Tue Aug 26 19:34:50 CEST 2008
>>> L=['10','15','20']
>>> sum(int(x) for x in L)
45
or
>>> sum(map(int,L))
45
sharon kim wrote:
> hi all,
>
> i have a list, for example;
>
> >>> L=[]
> >>> L.append('10')
> >>> L.append('15')
> >>> L.append('20')
> >>> len(L)
> 3
> >>> print L
> ['10', '15', '20']
>
> is there a way to sum up all the numbers in a list? the number of
> objects in the list is vary, around 50 to 60. all objects are 1 to 3
> digit positive numbers.
>
> all i can think of is check the length of the list (in the above
> example, 3), then L[0]+L[1]+L[2] ......
>
> is there a better way to do the job? thanks.
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