如何在字符串中添加输入的数字（Python）

Question

How do i add all imputed numbers in a string?

Ex:

input:
5 5 3 5
output
18

and it must supports ('-')
Ex.

input
-5 5 3 5
output
8

I write something like this:

x = raw_input()
print sum(map(int,str(x)))

and it adds normally if x>0
But what to do with ('-') ?
I understand that i need to use split() but my knowledge is not enough (

Answer 1

You're close, you just need to split the string on spaces. Splitting will produce the list of strings ['-5', '5', '3', '5'] . Then you can do the rest of the map and sum as you intended.

>>> s = '-5 5 3 5'
>>> sum(map(int, s.split()))
8

Answer 2

its simple

>>> input = raw_input('Enter your input: ')
    Enter your input: 5 5 10 -10
>>> list_numbers = [int(item) for item in input.split(' ')]
>>> print list_numbers
    [5, 5, 10, -10]

And after what you want :)

Answer 3

您可以使用以下行：sum（map（int，raw_input（）。split（）））