Examples for OPC client and subscriber development in Python are now on GitHub: github.com/OPCLabs/Examples-QuickOPC-Python .

Note: QuickOPC now supports Python in much better way, cleaner syntax, and public packages (pypi.org/project/opclabs-quickopc/) on Python Package Index . See What's new in QuickOPC 2023.2 for more information. And, over 270 examples are available in the User's Guide!

Hello.

Just a note, be careful with assessing whether registering the license works. It rarely gives a direct error. Instead, it will simply silently fall back to the trial license. So, you really need to check the resulting serial number (which you are probably already doing).

Second, I am not sure how you actually did that in pythonnet? C# or VB.NET are compiled, so the license key gets embedded into your assembly produced by the compiler (and in runtime, you refer to it e.g. by GetExecutingAssembly).

Is pythonnet an interpreter? If so, into which assembly did you put the license key?

The trial key for experimenting with license key registration - the one you are mentioning - is installed with QuickOPC. There is e.g. one under ExamplesNet\CSharp\VS2019\Console\UADocExamples\Licensing\Key-DemoOrTrial-WebForm-1999003494-20180611.bin .

The system does not technically distinguish between developer and runtime key. When you purchase a commercial license, you will get just one license key. It is your responsibility to use the license key in accordance with to the license terms.

Best regards

Hello.

The files from Assemblies\net47\Design need not and should not be deployed.

Good catch - I will update the documentation for the next version to make this clear explicitly.

Best regards

Yes, the files from that directory should be enough (+ do the licensing).

You do not need to run the installer.

You do not need the .XML files. The User's Guide says "...you can simply install all .DLL files from Assemblies\net47 ...".

Best regards