Changing ironpython engine is disabled in Core setting

[pooya.jln (Pooya)]

Greetings to all,
after two days of frustration I’m reaching out here for some help.
I’m trying to do some API calls for a pluging that I’m developing but I get an error when It reached the request library code although I have added __fullframeengine__=True in my main script and all modules that I created.

I tested my functions individually outside of revit and they work fine.
I have tried using CPython (although I’m not sure I did everything right).
according to this post the solution is to use a different engine.

But the drop down list in pyrevit setting is disabled. I see there are different engines in pyrevit-Master > bin > engines.

How can I change the engine?

[pooya.jln (Pooya)]

So this is the solution:

1. create a clone. Here I named mine base0.
   pyrevit clone base0 base --dest="C:\pyRevit"
   

2. attach it to revit with the desired engine. here I have only one version of Revit installed (2022).
   pyrevit attach base0 2711 --installed
   

3. checking if it worked.
   pyrevit attached
   

   

[Kervin (KERVIN CALERO)]

Adding some notes here. I had similar problem. After switching engines to CPython my scripts didn’t work as expected. Could not import pyrevit modules, gotmultiple errors dialog, etc.

Solution for me was to: remove all pyrevit .addin files also located here:
C:\ProgramData\pyRevit
C:\ProgramData\Autodesk\Revit\Addins[year]
%ProgramData%
%AppData%

Reboot machine

Re-install the latest pyrevit (to %USERNAME%)

Start Revit

The engine is now back to ironpython 2711 and script working