Approach 1

In the first approach we’ll loop through the elements of the array and add every element to the sum which is initialized to 0.

arr = [1,2,3,4,8,9]
sum = 0
for element in arr:
    sum = sum + element

print("sum of array elements is ", sum)

Output

sum of array elements is  27

Approach 2

In the second approach, we’ll use the inbuilt method sum() to calculate the sum of elements of an array.

Please note that you can pass any iterable to the sum() function.

sum = sum(arr)
print("sum of array elements is ",sum)

Output

sum of array elements is  27