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Simple Program: Palindrome

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Problem

Speridian Technologies' customer portal receives short identifiers that must be checked for symmetry. Write a function that determines whether a string is a palindrome, meaning it reads exactly the same from left to right and right to left.

The comparison is case-sensitive, and every character is significant. Do not remove spaces, punctuation, or other characters. An empty string is considered a palindrome.

Formal Specification

Implement is_palindrome(s), where s is a string. Return True if s is a palindrome; otherwise, return False.

Constraints

  • 0 <= len(s) <= 10^5
  • s contains printable ASCII characters
  • The comparison is case-sensitive
  • The input string must not be modified

Function Signature

def is_palindrome(s):
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