怎么用python输出指定范围内的质数？

#!/usr/bin/python3

# 输出指定范围内的素数

# take input from the user

lower = int(input("输入区间最小值: "))

upper = int(input("输入区间值: "))

for num in range(lower,upper + 1):

# 素数大于 1

if num > 1:

for i in range(2,num):

if (num % i) == 0:

break

else:

print(num)

$ python3 test.py

输入区间最小值: 1

输入区间值: 100

2

3

5

7

11

13

17

19

23

29

31

37

41

43

47

53

59

61

67

71

73

79

83

89

97