how to get a cursor beyond the first 1250 so that paging patterns continue to work

gistfile1.py

def cursor_from_offset(q, offset, cursor=None):
    """
    the maximum cursor position you can get in one shot is
    1250 (page_size=250, offset=1000), so to get a cursor
    beyond that requires a bit of work.
    will return None if not results and more
    """
    MAX_OFFSET = 1000

    if offset <= MAX_OFFSET:
        kw = dict(page_size=offset,
                  keys_only=True)


        if cursor:
            kw["start_cursor"] = cursor

        result, c, more = q.fetch_page(**kw)
        return c

    else:
        continue_ = True
        offset_ = offset
        c = None

        while continue_:

            if offset_ > MAX_OFFSET:
                c = cursor_from_offset(q, MAX_OFFSET, cursor=c)
                offset_ -= MAX_OFFSET
            else:
                c = cursor_from_offset(q, offset_, cursor=c)
                offset_ = 0
            continue_ = (offset_ > 0) and c is not None

        else:
            return c