code: def _example_cur_kline(quote_ctx):
      
      # subscribe Kline
      stock_code_list = ["US.AAPL", "HK.00700"]
      sub_type_list = [ft.SubType.K_1M, ft.SubType.K_5M, ft.SubType.K_15M, ft.SubType.K_30M, ft.SubType.K_60M,
                       ft.SubType.K_DAY, ft.SubType.K_WEEK, ft.SubType.K_MON]
  
      ret_status, ret_data = quote_ctx.subscribe(stock_code_list, sub_type_list)
      if ret_status != ft.RET_OK:
          print(ret_data)
          exit()
  
      ret_status, ret_data = quote_ctx.query_subscription()
      if ret_status == ft.RET_ERROR:
          print(ret_data)
          exit()
      print(ret_data)
  
      for code in stock_code_list:
          for ktype in [ft.SubType.K_DAY, ft.SubType.K_1M, ft.SubType.K_5M]:
              ret_code, ret_data = quote_ctx.get_cur_kline(code, 5, ktype)
              if ret_code == ft.RET_ERROR:
                  print(code, ktype, ret_data)
                  exit()
              kline_table = ret_data
              print("%s KLINE %s" % (code, ktype))
              print(kline_table)
              print("\n\n")
docs: 获取当前K线，输出 股票代码，时间，开盘价，收盘价，最高价，最低价，成交量，成交额