Custom UO in python : Save as a type?

[Esben Jacobsen]

I have made my own custom filter UO in a Python script block. It works as I want it for now, but I need about 20 of the same filter-unit in my flowsheet and I want to be able to edit the python code in one place and not have to edit all 20 units every time i need to make a small change to the code.
How can this be done? Can I save the custom block as a type somehow?

[Daniel Medeiros]

You can save the main part of the code in a new script on the script manager, then call it using

code = Flowsheet.GetScriptText('MyScript')

exec(code)

[Esben Jacobsen]

Hello Daniel,
That sound like an acceptable solution.
However when I move the code to the script editor and use the exec(code) in the Python Script I get an error. I think I am missing some small simple thing because I get the same error at the first line of code no matter what I put in the script.
This error:

System.Exception: File "<string>", line 7
feed=ims1
^
SyntaxError: unexpected token '\r' ---> Microsoft.Scripting.SyntaxErrorException: unexpected token '\r'</string>

[Daniel Medeiros]

Sorry, try this:

code = Flowsheet.GetScriptText('MyScript').replace('\r', '')

exec(code)

[Esben Jacobsen]

Daniel, that worked !
Thank you very much for the fast support 👍

I have been using DWSIM only a few days and I already have some very nice simulations going. And I have the source code compiled in Visual Studio so I can dig a bit into the code. Very useful.