Project Euler Project 1

PE-Project1

sum35 = []
target = 1000
for i in range(0, target):
        sum35.append(0)

for i in range(0, target):
        if i*3 < target:
                sum35[i*3] = i*3
        if i*5 < target:
                sum35[i*5] = i*5

print sum(sum35)

Maybe not the fastest or light on memory, but effective!