Is there a way to find out the version of Python that Trelis is using?
One way the version of Python can be found is in the Script tab. If you don’t have the Script tab visible, go to Tools->Options->Layout and under Command Line Workspace, check the box for Show Script Tab.
Then in the Script tab, type
import sys
print (sys.version)
You will get output like this. The Python version is 2.7.10.
2.7.10 (default, May 23 2015, 09:44:00) [MSC v.1500 64 bit (AMD64)]