Solution Exercise 90 *: python algorithm which transforms a list by adding its terms

Exercise 90 *

Given a list of integers

L = [n1, n2, n3, ..., np]

, write an algorithm in python which returns the list:

L_sum = [n1, n1 + n2, n1 + n2 + n3, .. ., n1 + n2 + n3 + ... + np]

Solution

# function which calculates the sum of the list elements
def sumList (L):
    # initialization of the sum of the list elements 
    s = 0
    for x in L:
        s = s + x
    return s

# function which determines the list L_sum
def sum_list (L):
    # initializationh of the list L_sum
    L_sum = []
    for i in range (0, len (L)):
        L_sum.append (sumList (L [0: i+1]))

    return L_sum

# Example
L = [3, 2, 5, 1, 0, 7]
print ("L_sum =", sum_list (L))