how to specify PACKAGE SIZE for to RFC_READ_TABLE from PyRFC?

I'm trying to use PyRFC to extract large tables via RFC_READ_TABLE (due to an uncooperative/unsupportive basis team).

I know that RFC_READ_TABLE supports calling it with PACKAGE SIZE since ERPConnect does it by default.

In Python for Basis (Part 1), I learned how to specify an Open SQL where clause using the OPTIONS:

result = connector.call('RFC_READ_TABLE',

                       QUERY_TABLE=tablename,

                       DELIMITER=delimiter,

                       OPTIONS = [{'TEXT':where_clause}])

Is there a way, and how to specify PACKAGE SIZE in this case?

Thanks