Does anyone know how to add new Attribute Definitions to an existing block? I had hoped the BlockReference.SetAttributeByTag would work however it only updates existing tags as far as I can tell. I have found threads online about doing it with Autocad .NET coding but its not python and I know very…

@AlexanderMcN welcome to the forum! first off, yes in Dynamo OOTB we do not have code to add attributes to existing blocks. Second, well done on the Python attempt, you need to uncomment the line with “t.Commit()” to actually see the changes in the document, this is the first thing that comes to min…

Thanks Paolo, good spot I had turned off some lines when I was trying to figure out what other lines of code where causing issues. If i turn off the lines from the breIds = (about half way down) and turn on the commit, it will run without errors however doesn’t actually do anything to the block, ev…

Hey @AlexanderMcN @Paolo_Emilio_Serra1 What input are you providing on BlockID? i am trying to get this working in civl3D2022, but it continuously gives me the error: [image]

Hi @dick.elsman_infranea The BlockID is the object Handle, as shown in image below. its a string value you need to install. [image] I am still using C3D 2021, i think 2022 and beyond the background APIs and python coding is changing to the newest version of Python, so that might be why its not w…

did you ever solve this? i get the same error in C3D 2023

I had similar issues with running old python code, and new python code which is using c3d api. The Solution was to install IronPython v2.7 package (its the 2.5 version in package manager- but iron python 2.7) as mentioned to me by @zachri.jensen . Once you install this create anew python node and …

Thanks for responding, I will give it a go.

BlockReference Add Attributes

Civil 3D

AlexanderMcN July 5, 2024, 9:33am 8

Add Atributes P02.dyn (64.7 KB)
Hey Paolo,
This python worked in 2021 but doesn’t in 2023, how can i get it to work with the new CPython3?

Thanks,
Alexander

Python create connected alignment

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BlockReference Add Attributes

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