python檢查是奇數還是偶數

檢查的依據：奇數除2余1；偶數除2無余數

num = int(input("請輸入一個整數："))
if num % 2 == 1:
    print(num,"是奇數")
elif num % 2 == 0:
    if num / 2 == 0 and user_input % 2 == 0:
        print (num,"既不是奇數也不是偶數")
    else:
        print(num,"是偶數")