How to add string numbers

Question

Well I have a string like a=("1234") and I wanted to separate these numbers in order to add them, like this: 1+2+3+4 How can I do that? I appreciate any help :)

Answer 1

You can do the following if the string contains only numbers:

sum([int(x) for x in a])

This line creates a list of string characters converted to number and then sums each element of the list.

Remembering that this does not check whether the string contains only numbers and sums each position of the string, for example, if I have "1234" the result of that sum will be 10.

EDIT

Since you said you can’t use list compression, another possible way is to check element by element within a for and make this sum, as in the following example:

soma = 0
minha_string = "123456"
for numero in minha_string:
    soma += int(numero)

This will have the same effect (and same restrictions) as list compression.