Programming Test

Here's a Python function `is_palindrome(s)` that checks if a given string ` `s` is a palindrome, along with one test case: ```python def is_palindrome(s): # Remove non-alphanumeric characters and convert to lowercase s = ''.join(c.lower() for c in s if c.isalnum()) # Check if the string is equal to its reverse return s == s[::-1] # Test case test_string = "A man, a plan, a canal: Panama" print(is_palindrome(test_string)) # Output: True ``` Explanation: 1. The function first removes all non-alphanumeric characters (punctuation, (punctuation, spaces, etc.) from the string `s` and converts it to lowercase. This is done using a generator expression inside `join()` that i iterates over each character `c` in `s`, keeping only those characters for which `c.isalnum()` returns `True`. The resulting string is then converted to lowercase. 2. After cleaning the string, the function checks if the cleaned string `s` `s` is equal to its reverse (`s[::-1]`). If they are equal, it means the or original string (ignoring non-alphanumeric characters and case) is a palindrome, and the function returns `True`. Otherwise, it returns `False`. `False`. 3. The test case demonstrates the usage of the function with the string "A man, a plan, a canal: Panama", which is a well-known example of a palindrome when ignoring spaces, punctuation, and capitalization. The expected output is `True`, indicating that the cleaned version of this string is indeed a palindrome.