Sanitize a string to make it safe for use as a filename

filename_sanitizer.py

import re

# macOS/Windows compatibility
INVALID_FILENAME_CHARS = re.compile(r'[<>:"/\\|?*\x00-\x1F]|[\s.]$')

def sanitize_filename(filename: str) -> str:
    """
    Sanitizes a string to make it safe for use as a filename.
    Replaces problematic characters with a hyphen (-).
    """
    return INVALID_FILENAME_CHARS.sub('-', filename)