How would I separate numbers and from a string and return the summation of them?

I am given a string which is loop_str="a1B2c4D4e6f1g0h2I3" and have to write a code that adds up all the digits contained in ‘loop_str’, and then print out the sum at the end. The sum is expected to be saved under a variable named ‘total’. The code I have written above although is reaching the correct answer, I am struggling on having to define total and create a for loop for this specific task.

sum_digits = [int(x) for x in loop_str.split() if x.isdigit()]
total=sum_digits
print("List:", total, "=", sum(total))

>Solution :

I have edited your code a little and the result is what follows:

loop_str="a1B2c4D4e6f1g0h2I3"
sum_digits = [int(x) for x in loop_str if x.isnumeric()]
total = sum(sum_digits)
print(total)

Output

23

Note that there is no need to change .isdigit() to .isnumeric()