Harald
May 20, 2025, 11:46am
1
I have been using this code for IronPython2 and it works up until Revit 2024 but not in Revit 2025 anymore.
import sys
dataEnteringNode = IN
The error given is:
Does anybody know what is the cause of this?
Not sure about python 2, but it works fine with Cpython3 in Revit 2025?
Just as a test, do you get the same?
Cheers,
Mark
Hi @Harald
IronPython2.7 is obsolete, it is no longer maintained by the IronPython team, and it is not really sure that it will be compatible with future versions of Net Core 9+ ,
Revit 2025+ marks a new departure (NetCore), and this is an opportunity to migrate to Python3:
CPython3 (or better PythonNet3)
IronPython3
1 Like
I reported the issue here, with a temporary workaround, but you should still migrate to Python3 (see my previous post)
opened 07:08AM - 21 May 25 UTC
Hi,
## Dynamo version
DynamoSanbox 3.4.1
## IronPython version
2.7
## Dy… namoIronPython2 Package version
3.2.1
## Operating system
Win 10
## What did you expect to see?
IronPython.StdLib is not loaded by default
## code to reproduce
```
import sys
import clr
try:
import functools
except Exception as e:
OUT = e, sys.version, sys.path
```
## workaround adding the correct **StdLib path** in `sys.path`
```
import sys
import clr
import System
clr.AddReference("System.Core")
clr.ImportExtensions(System.Linq)
#
ipy2_assembly = System.AppDomain.CurrentDomain.GetAssemblies().FirstOrDefault(lambda a : a.GetName().Name == 'IronPython.Modules')
assembly_ipy2_Directory = System.IO.Path.GetDirectoryName( ipy2_assembly.Location )
parent_ipy2_Directory = System.IO.Directory.GetParent(assembly_ipy2_Directory).FullName
#
if System.IO.Directory.Exists(parent_ipy2_Directory + "\\lib"):
sys.path.append(parent_ipy3_Directory + "\\lib")
if System.IO.Directory.Exists(parent_ipy2_Directory + "\\extra\\lib"):
sys.path.append(parent_ipy2_Directory + "\\extra\\lib")
if System.IO.Directory.Exists(parent_ipy2_Directory + "\\extra"):
sys.path.append(parent_ipy2_Directory + "\\extra")
import functools
import io
```
3 Likes
Yeah, that works with Cpython3.
Yeah, if I change it to CPython3 it works.
