arpit.tripathi.md

def _sum(arr):

# initialize a variable 
# to store the sum 
# while iterating through 
# the array later 
sum=0
  
# iterate through the array 
# and add each element to the sum variable 
# one at a time 
for i in arr: 
    sum = sum + i 
      
return(sum)  

driver function

arr=[]

input values to list

arr = [12, 3, 4, 15]

calculating length of array

n = len(arr)

ans = _sum(arr)

display sum

print ('Sum of the array is ', ans)