python，回文语句判断

python程序如下：

import string#测试字符串: "Aman,aplan,acanal--Panama!" "凤落梧桐梧落凤'def reverse(text):    #反向打印出字符串    return text[::-1]def is_palindrome(text):    #将大写字母转为小写字母    text=text.lower()    #将空格替换为空    text=text.replace(' ','')    #将特殊字符替换为空  string.punctuation代表包含所有标点的字符串，需要引入string    for char in string.punctuation:        text=text.replace(char,'')    return text==reverse(text)something=input("Enter text:")if is_palindrome(something):    print('Yes,it is a palindrome')else:    print('No,it is not a palindrome')