python将csv文件插入kudu表

import sys
from job.base.JobBase import ExitCode
import job.base.ClientUtil as util
import traceback
import os

def insert_table(tablename):
    try:
        deletesql='delete from hermes_ads.'+tablename
        util.execSql(deletesql,locals())
        with open('D:/'+tablename+'.csv',