It seems 2.13 is changing all python nodes to 3. is there a setting to keep them as 2.7 instead of relying on people to update their packages for nodes to work again?

It let’s it work but dosnt change the automatic change to 3 :slightly_frowning_face:

Nodes shouldn’t be automatically changing to three - did you accidentally run an upgrade tool on it?

I don’t think so. Just copied the scripts and packages then opened in 2.13. Then noticed nodes wernt working. Then went inside and they were python 3. Then copied the python in the node out into the graph and changed to python 2.7 and worked

Hi, probably because Python custom nodes syntax is XML (old structure) instead of JSON

So a Dynamo 1.x upgrade to 2.13 pushes the engine to CPytthon 3? Does this reproduce (literally shut down the laptop 2 seconds ago or I’d check myself)?

yes :roll_eyes: [image] Custom Nodes : Conversion Xml to Json architecture Share Hello all I share a Python script to convert old dyf(s) with Xml architecture to new Json architecture (custom node). Conversion to launch from Dynamo Revit higher than 2.04. Note With Dynamo 2.13+ if your custom nodes are written with IronPython2 engine and the dyf’s format is Xml (old dyf architecture) this will default affect to the CPython3 engine instead of the ipy2 engine. __author__ = "Cyril POUPIN" __license__ = "MIT" __version__ = "0.5" import clr import sys import System from Sy…

Split this to a new topic as it feels important enough to track/watch separately.

The Bulk Python Engine updater in the ZIP I posted here can certainly be revised to allow the bulk downgrade to IronPython from CPython. Filing this one as one more reason to upgrade graphs in your library at each release. [image] Updating python node in multiple scripts Developers That’s the ‘work’ account which exists solely because it has to, and since I had info I thought might keep you hopeful I wanted to share it out before you got discouraged. First some background. Managing Dynamo repositories is hard, as each release can require modifying your code base, similar to what developers of add-ins go through. However we (development, seasoned users, community leaders) haven’t done a good job showing how this is best accomplished. My small section of this class aimed t…

I don’t think it’s so simple by editing the dyn, (you need to convert from XML to JSON format) it would be easier to handle this directly in DynamoServices library if IsXmlContent(dyffile) → use IronPython2 engine @Michael_Kirschner2 do you think it’s possible ?

I don’t have my laptop but I think the node was dynamo 2 somthing but I’ll have to double check tomorrow. Will try reverse script too

Python engine automatically updating to CPython3

Revit

c.poupin November 3, 2022, 7:40am 8

yes

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Python engine automatically updating to CPython3

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