lo=int(input('下限:'))
hi=int(input('上限:'))
for i in range(lo,hi+1):
if i > 1:
for j in range(2,i):
if (i % j) == 0:
break
else:
print(i)
结果:
下限:1 上限: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 Process finished with exit code 0



