Python-Oracle passando em um parâmetro de saída do cursor

cid = 1
rep_date = date(2011,06,30)

l_cur = curs.var(cx_Oracle.CURSOR)
l_query = curs.callproc('sp_procedure', (cid,rep_date,l_cur))

l_results = l_query[2]

for row in l_results:
    print row

# Column Specs
for row in l_results.description:
    print row