Write a Python function that checks whether a string is a palindrome, ignoring spaces, punctuation and case.

import string

def is_palindrome(text: str) -> bool:
    """
    Checks if a string is a palindrome, ignoring case, spaces, and punctuation.
    """
    # Filter to alphanumeric characters and convert to lowercase
    cleaned = [char.lower() for char in text if char.isalnum()]
    
    # Check if the cleaned list is equal to its reverse
    return cleaned == cleaned[::-1]


# --- Test Cases ---
if __name__ == "__main__":
    test_cases = [
        ("A man, a plan, a canal: Panama!", True),
        ("Race a car", False),
        ("Was it a car or a cat I saw?", True),
        ("No 'x' in Nixon", True),
        ("Hello, World!", False),
        ("12321", True),
        ("123421", False),
        ("", True),  # An empty string is trivially a palindrome
    ]

    for phrase, expected in test_cases:
        result = is_palindrome(phrase)
        status = "✓ PASS" if result == expected else "✗ FAIL"
        print(f"{status} | Input: {phrase!r} -> Result: {result}")