Python连接数据库

cx_Oracle-6.0.2-cp36-cp36m-win_amd64 （windows环境）
cx_Oracle-6.0.2-cp35-cp35m-manylinux1_x86_64 (linux环境)

cx_Oracle.connect('username','pwd','IP/HOSTNAME:PORT/TNSNAME')

import pandas as pd
import cx_Oracle as co

def query(table,column):
username = "ods"
pwd = "1q2w3e"
dsn = co.makedsn('137.0.0.1','1521','sdedw')  #建立连接
conn = co.connect(username,pwd,dsn)
cursor = conn.cursor() #获取游标
cursor.execute(table)  #执行查询
rows = cursor.fetchall()  #获取数据,可以有多种方式 fetchall()，fetchmang(N)(N 为正整数),fetchone()
count = cursor.rowcount
print("=====================")
print("Total:", count)
print("=====================")
data = pd.DataFrame(rows,columns = column)
cursor.close
return data

data = query("select * from temp_rwk_cnk_ls6",['SERV_ID','CUST_AGE','SERV_NEW_CUST_TYPE','SERVICE_LEVEL','ONLINE_LEN','BILLING_MODE_ID','BUILD_TYPE','SUB_TYPE','NUMBER_COUNT','NUMBER_COUNT_TREND','AGAIN_NET_IN_FLAG','OFFER_NAME','IS_XIEYI','ACCT_FEE','BALANCE'])

data = data.set_index('SERV_ID')  #指定索引