Answer to Question #197868 in Python for LEROY

Question

Write a program using function called cumulative_sum that takes a list of numbers and returns the cumulative sum; that is, a new list where the nth element is the sum of the first n elements from the original list. For example, the cumulative sum of [1, 2, 3] is [1, 3, 6]. 

Answer 1

def camulative_sum(lst:list):
    res = list()
    sum = 0
    for item in lst:
        sum += item
        res.append(sum)
    return res