How to use the pyzotero.zotero_errors.TooManyRetries function in pyzotero

return "\nCode: %s\nURL: %s\nMethod: %s\nResponse: %s" % (
            req.status_code,
            # error.msg,
            req.url,
            req.request.method,
            req.text)

    if error_codes.get(req.status_code):
        # check to see whether its 429
        if req.status_code == 429:
            # call our back-off function
            delay = backoff.delay
            if delay > 32:
                # we've waited a total of 62 seconds (2 + 4 … + 32), so give up
                backoff.reset()
                raise ze.TooManyRetries("Continuing to receive HTTP 429 \
responses after 62 seconds. You are being rate-limited, try again later")
            time.sleep(delay)
            sess = requests.Session()
            new_req = sess.send(req.request)
            try:
                new_req.raise_for_status()
            except requests.exceptions.HTTPError:
                error_handler(new_req)
        else:
            raise error_codes.get(req.status_code)(err_msg(req))
    else:
        raise ze.HTTPError(err_msg(req))

"""
        return "\nCode: %s\nURL: %s\nMethod: %s\nResponse: %s" % (
            req.status_code,
            # error.msg,
            req.url,
            req.request.method,
            req.text,
        )

    if error_codes.get(req.status_code):
        # check to see whether its 429
        if req.status_code == 429:
            # try to get backoff duration
            delay = req.headers.get("backoff")
            if not delay:
                raise ze.TooManyRetries(
                    "You are being rate-limited and no backoff duration has been received from the server. Try again later"
                )
            else:
                zot._set_backoff(delay)
        else:
            raise error_codes.get(req.status_code)(err_msg(req))
    else:
        raise ze.HTTPError(err_msg(req))