python链接Oracle数据库的方法

#coding=UTF-8
  import cx_Oracle
  def hello():
    '''Hello cx_Oracle示例：
    1)打印数据库版本信息.
    2)查询表数据.'''
    conn = cx_Oracle.connect("obs61","obs61","tx8i.hp")
    cur = conn.cursor()
    try:
      print "Oracle Version:%s" % conn.version
      print "Table SUB_POLICY rows:"
      cur.execute('select * from wlan_future_event')
      for row in cur:
        print row
    finally:
      cur.close()
      conn.close()
  hello()