2008-08-25 08:47:37 UTC
Yes, It looked like the Python installation was somehow mixed up. The PYTHONPATH approach is a good way, however, the only things you should need is twisted and ZSI. The rest of the Python modules should be included by Python itself.
The "decimal" datatype is part of any Python distribution starting from Python 2.4, so it should be there. It is moreover needed by PyOPC, so don't comment it out.
I personally did not test my client against your specific servers, so I don't really know why it fails. All that I can say is, that there may be some SOAP incompatibilities. Due to lack of interest in my project I did not update PyOPC to the latest versions of ZSI/Twisted.
What I would recommend you is to exactly install the python, twisted and ZSI versions, I stated in the documentation, and then try to run the integration tests. If these tests fail, it is very likely that there will be some communication problem with the real server. PyOPC fully complies to the standard, however, that does not necessarily mean that other devices do so, too.
For tracing, there's to my mind some option, where you can enable in PyOPC some data logging. This way, the whole communication will be logged.
Best Regards,
Hermann
