Lab5 - Find sum of positive values in array

def find_sum(n):
    i=0
    sum=0
    while(i<len(n)):
        if(n[i]>0):
            sum=sum+n[i]
        i+=1
    return sum
   
def setup():
     n=[5,8,-9,7,5,3,-2,9]
     print("Sum of values in array",find_sum(n))
    
setup()