Lab 5 : Find sum of values in array

def setup():
   n = [1,2,3,4,5,6,7,8,9]
   print("Sum = ",sum(n))
 
def sum(a):
   i = 0
   sum = 0
   while(i<len(a)):
      sum = sum+a[i]
      i = i+1
   return sum
   
   
setup()