def METHOD_NAME(self, extended=False):
    for open_func, filename in self._get_files(extended):
        if not os.path.exists(filename):
            continue
        try:
            with open_func(
                filename, mode="rt", errors="replace", encoding="utf-8"
            ) as fp:
                yield fp
        except IOError as e:
            logging.exception(e)
            pass