Summing elements in a list

list, python, sum

Solution

You can sum numbers in a list simply with the sum() built-in:

sum(your_list)

It will sum as many number items as you have. Example:

my_list = range(10, 17)
my_list
[10, 11, 12, 13, 14, 15, 16]

sum(my_list)
91

For your specific case:

For your data convert the numbers into `int` first and then sum the numbers:

data = ['5', '4', '9']

sum(int(i) for i in data)
18

This will work for undefined number of elements in your list (as long as they are "numbers")

Thanks for @senderle's comment re conversion in case the data is in string format.

Problem

Here is my code, I need to sum an undefined number of elements in the list. How to do this? ``` l = raw_input() l = l.split(' ') l.pop(0) ``` My input: `3 5 4 9` After input I delete first element via `l.pop(0)`. After `.split(' ')` my list is `['5', '4', '9']` and I need to sum all elements in this list. In this case the sum is 18. Please notice that number of elements is not defined.

Original source

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