python检查是奇数还是偶数

检查的依据：奇数除2余1；偶数除2无余数

num = int(input("请输入一个整数："))
if num % 2 == 1:
    print(num,"是奇数")
elif num % 2 == 0:
    if num / 2 == 0 and user_input % 2 == 0:
        print (num,"既不是奇数也不是偶数")
    else:
        print(num,"是偶数")