How to batch storage of greenplums extension language plpythonu

我在greenplum6Created a stored procedure in,使用的是plpythonu擴展語言,I used the following code to generate aDataFrame：

CREATE OR REPLACE FUNCTION myFunc02() 
RETURNS void AS 
$$
import pandas as pd
rv = plpy.execute('SELECT * FROM test_py_01')
df = pd.DataFrame(rv[0:])
...DataFrame計算....
for index, row in df.iterrows():
    plan = plpy.prepare("insert into test_py_02 values($1,$2,$3)",['int8','text','text'])
    plpy.execute(plan, [row.c1,row.c2,row.c3])
$$ LANGUAGE 'plpythonu';

On the official website I only findplpy.executeCan write a single piece of data to a database table,But the efficiency of writing a large amount of data circularly is too poor,Is there a way to batch write it?？A friend asked why not to usePython腳本,由於一些原因,我只能使用GPwrite stored procedureplpythonu代碼,and I want to be able to useGPperformance computing power,希望大家給個思路,先謝謝大家了.