def is_palindrome(s):
    # 将字符串转换为小写并去除空格
    s = s.lower().replace(" ", "")
    # 反转字符串
    s = s[::-1]
    # 判断是否为回文字符串
    return s == s[::-1]
s = "abcdefedcba"
is_palindrome(s)