I removed the epics folder and now I don't have any warning messages. Thank you for your help.

---Johan


From: ifeffit-bounces@millenia.cars.aps.anl.gov [ifeffit-bounces@millenia.cars.aps.anl.gov] on behalf of Matt Newville [newville@cars.uchicago.edu]
Sent: 01 August 2014 18:05
To: XAFS Analysis using Ifeffit
Subject: Re: [Ifeffit] larch warning about epics plugin

Hi Johan,


On Fri, Aug 1, 2014 at 10:30 AM, Johan Nilsson <johan.nilsson@chalmers.se> wrote:
>
> Hello,
>
> Today I reinstalled larch after upgrading my computer to Ubuntu 14.04. I downloaded the latest source and installed all the recommended dependencies except PyEpics and then continued with the install. Everything went smoothly and larch appears to be working as it should. However when I start the program I get warning messages about the epics plugin
>
> $ larch
>   Larch 0.9.23 (8-Apr-2014) M. Newville, T. Trainor
>   using python 2.7.6, numpy 1.8.1, wx-enabled, wx version 2.8.12.1
> Warning: /usr/share/larch/plugins/epics/xrfcontrol.py is not a valid plugin
>    error:  ImportError('cannot import name ROI',)
> Warning: /usr/share/larch/plugins/epics/xrf_detectors.py is not a valid plugin
>    error:  ImportError('cannot import name ROI',)
> Warning: /usr/share/larch/plugins/epics/xspress3.py is not a valid plugin
>    error:  ImportError('cannot import name ROI',)
>
> I have no plans to use this plugin but I tried to install PyEpics to see if anything would change but it did not. Is this a bug or is there some configuration I can change to get rid of the warnings?

Sorry, my fault.  I've been playing with using Larch and Epics together.  This is fun, but I haven't been careful about the separation.

For a quick fix, you can just delete the plugins/epics folder (from the installation directory /usr/share/larch/plugins).  There is nothing in there you'll need if you're not using Epics.

I think the "best solution" is for me to make a way for entire folders of plugins to be loaded only if some set of dependencies are also installed.  That would be useful for making plugins for, say, PyMCA, or reading spec files or whatever.

--Matt