How can I call cursor in python

CREATE OR REPLACE PROCEDURE WaterBillInMonth(
       in p_Month INT,
       INOUT refcur refcursor DEFAULT 'rs_resultone'::refcursor)
LANGUAGE 'plpgsql'
AS $BODY$
BEGIN
    OPEN refcur for
    SELECT u.username, w.prev_volume, w.cur_volume, 
        w.total_volume, w.price, w.total_volume_price, w.due_date, w.payment_date, w.created_at
    FROM water_bills w JOIN users u ON w.user_id = u.id
    WHERE p_Month = EXTRACT (MONTH FROM w.created_at);
END;
$BODY$;
-- call procedure
CALL WaterBillInMonth(4, 'rs_resultone');
FETCH ALL FROM rs_resultone;
I want to call cursor (query)

I want to call this from python to retrieve the results from the cursor.

    stmt = text("CALL WaterBillInMonth(:p_month, 'rs_resultone')")
    result = db.execute(stmt, {'p_month': p_month})
    # bills = result.fetchall()
    bills = result.fetchall()
    print(bills)
    # bills = db.execute(text("FETCH ALL FROM rs_resultone"))