def data_filename(fname: str) -> str:
    """Return the path to an "htmlfiles" data file of ours.
    """
    static_dir = os.path.join(os.path.dirname(__file__), "htmlfiles")
    static_filename = os.path.join(static_dir, fname)
    return static_filename
Return the path to an "htmlfiles" data file of ours.
    
coverage/html.py