打印质数

prime_list=[2]
def is_prime(num):
    i=0
    n=prime_list[i]
    while num//n>=n:
        if num%n==0:
            return False
        i+=1
        n = prime_list[i]
    return True


def get_prime(num):
    for i in range(3,num+1):
        if is_prime(i):
            prime_list.append(i)

get_prime(1000)
for i in prime_list:
    print(i)