Hi there, Is there any plans to have compatibility between Ignition (latest version) and Python 3.x? Thanks Erik

Is you’re python 3 stuff just running scripts on a database, that’s all? Personally I’d probably make a flask server to host your python 3 stuff on, and then you can use the system.net.HTTPVerb functions https://docs.inductiveautomation.com/display/DOC80/system.net to talk to your flask server to t…

You could set up an inter process communication like a socket connection between your external python 3+ application and the existing jython 2+ scripts in Ignition and communicate between the two thru a handshake. It may also be possible for your external application to access the same SQL data base…

However , beware the socket on Ignition should be a java socket rather than a jython socket as java sockets are more efficient and reliable than jython sockets. (We have a module for the Java scoket using jython in Ignition!).

That's also a possible approach if the external python 3 application is a web application. If its just a standalone application, then I think a simple socket approach is good enough in my opinion.

Makes sense. I used to be a web developer so my my go to is API, and setting one up wtih flask is quick and easy so that was my first thought. I’m sure there’s many ways to tackle this situation.

Its been three years since this post creation, so was wondering if anything planned ? Is there any plans to have compatibility between Ignition (latest version) and Python 3.x?

Jython will need to support Python 3 first since that's what Ignition uses.

Nothing planned right now. Honestly, this doesn't seem likely in the next couple years, if ever. The backwards incompatibility issues are insurmountable imo. The way I see it, the best case is that we introduce new/parallel scripting engines, with Jython3/Python3 being one possibility. But this ide…

See also my comment above about Jython 3.x, if it ever arrives, not supporting CPython 3.x DLLs. So if your inquiry relates to some machine learning or number crunching application that runs in Python3, you will be disappointed, as it will run as well in Jython3 as it does in Jython2. (Not at all.…

Is there any discussion of an alternative to Jython, like GraalPy (GraalVM) for Python 3?

Inductive Automation Forum

Python 3.x soon?

Ignition

paul-griffith May 21, 2025, 5:00pm 20

Python version 3 update? Ignition

I guess I can paraphrase what I said on stage at the dev panel at this year's ICC, for posterity and so I can link to this in the future: So, the question people usually ask is "When is Python 3 coming to Ignition?". But in practice, there's really two broad reasons people are actually asking that question: They've heard that Python 2.7 is deprecated/old/unmaintained/a security risk/whatever. But that doesn't apply to Ignition, for a few reasons: When folks say "Python" out in the world, the…

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