Palindrome String Function | Dataford Interview Questions

PenFed Credit Union needs a utility that identifies whether a member-note string is a palindrome for a data-quality rule. A string is a palindrome when its alphanumeric characters read the same forward and backward, ignoring letter case, spaces, and punctuation.

Implement is_palindrome(text) to return True when text is a palindrome under these rules. Otherwise, return False.

Formal Specification

Input: text, a string containing letters, digits, spaces, and punctuation.
Output: A Boolean. Return True if the filtered, case-insensitive string is a palindrome, otherwise False.

Constraints

0 <= len(text) <= 100,000
text contains letters, digits, whitespace, and punctuation
Comparisons are case-insensitive
Non-alphanumeric characters are ignored

Function Signature

def is_palindrome(text):

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