primes = list(range(1, 1000)) lst_primes = [] for i in primes: if i % 3 == 0 or i % 5 == 0: lst_primes.append(i) print(lst_primes) print(sum(lst_primes)) lst_primes = [i for i in range(1, 1000) if i % 3 == 0 or i % 5 == 0] print(lst_primes) print(sum(lst_primes))