sum up numbers in a list

[sharon kim]

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.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20080827/9ff92dee/attachment.html>