Two questions about python OpenOPC library

Description of problems and environment

The OpenOPC library is friendly and easy to use, the api is also simple, but I discovered two problems while developing a tool for writing real-time OPC element data.

• Development Environment: Window 8.1, Python 2.7.6, wxpython 2.8 unicode
• In the test environment: Windows XP SP3, Python 2.7.6, wxpython 2.8 unicode, Softwell Rockwell as an OPC server
• In a deployment environment: Window XP SP3 connected to a Real-time Real-time PLC installed by RSLogix 5000 and RSLinx Classic Gateway

Questions

• The opc.list function does not list the entire element indicating node in both the test environment and the workstaion environment. The question is, how do I list 't' from the opc server?
  • int 'dint100' dint 't' RS logix 5000 soft_1
  • OPC Rockwell 't'
  • OpenOPC , 't', opc.read('[soft_1] t') .
  • "t" , - .

• opc.servers OPCError , "RSLinx OPC-" . opc.servers - DLL ?

  ! !