sum_all_numbers.py

# addition_str is a string with a list of numbers separated by the + sign.
# Write code that uses the accumulation pattern to take the sum of all of the numbers and assigns it to sum_val (an integer).
# (You should use the .split("+") function to split by "+" and int() to cast to an integer).

addition_str = "2+5+10+20"
sum_val = 0

for i in addition_str:
    sum_val = sum(map(int,addition_str.split("+")))
    print(sum_val)

addition_str = ("2+5+10+20")
addition_str = addition_str.split("+")
accum = 0

for n in addition_str:
accum = accum + int(n)

sum_val = accum