Palindrome Function in Python

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Problem

Celebal Technologies data validation utilities receive identifiers and text fields that may contain spaces, punctuation, and mixed capitalization. Implement a function that determines whether an input string is a palindrome after normalization.

A normalized palindrome is read identically from left to right and right to left after ignoring every non-alphanumeric character and treating uppercase and lowercase letters as equivalent.

Formal Specification

Given a string s, return a Boolean value:

Return True if the normalized string is a palindrome.
Return False otherwise.
Letters and digits are considered alphanumeric.
An empty normalized string is considered a palindrome.

Constraints

1 <= len(s) <= 2 * 10^5
s contains printable ASCII characters
Ignore all non-alphanumeric characters
Comparison is case-insensitive
An empty normalized string is considered a palindrome

Function Signature

def is_palindrome(s):

Your solutionPython 3

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