Your question is Palindrome With One Mistake. Start with the requirements on the right.
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John Deere diagnostic systems may receive field equipment codes containing one extra or mistyped character. Given a string s, determine whether it is a palindrome after removing at most one character.
A palindrome reads identically from left to right and right to left. The comparison is case-sensitive, and characters must not be normalized or ignored.
Implement valid_almost_palindrome(s), where s is a string. Return True if s is already a palindrome or can become one by deleting exactly one character. Return False otherwise.
def valid_almost_palindrome(s):