python中素数怎么判断

Question

如题所述

Answer 1

num = int(input("请输入一个数字: "))
if num > 1:
for i in range(2,num):
if (num % i) == 0:
print(num,"不是质数")
print(i,"乘以",num//i,"是",num)
break
else:
print(num,"是质数")
# 如果输入的数字小于或等于 1，不是质数
else:
print(num,"不是质数")