python輸出指定區間范圍內的素數

#!/usr/bin/env python
# -*- coding:utf-8 -*-

# 輸出指定范圍內的素數
lower = int(input("請您輸入區間最小值: "))
upper = int(input("請您輸入區間最大值: "))
lst = []
for num in range(lower,upper + 1):
    # 素數大於 1
    if num > 1:
        for i in range(2,num):
            if (num % i) == 0:
                break
        else:
            lst.append(num)
print("%s-%s素數列表："%(lower,upper),lst)