#coding:utf-8b=[]a=int(input('请输入数字:'))for a in b:缩进b()缩进for i in range(2,b):缩进缩进if b%i==0:缩进缩进缩进breakif b==1 and b==0:缩进print('No') elif b==2:缩进print('Yes')elif b==i+1:缩进print('Yes')else: print('No')
def isprime(n):
i=2
while i*i <= n:
if n % i == 0:
return False
i=i+1
return n > 1