>>> 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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