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<== Date ==> <== Thread ==>
Subject: Re: Spawn error when pyepics device puts into nonexistent PV
From: "Marco A. Barra Montevechi Filho via Tech-talk" <tech-talk at aps.anl.gov>
To: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>, "Marco A. Barra Montevechi Filho" <marco.filho at lnls.br>
Date: Mon, 18 Sep 2023 21:14:59 +0000
I just figured the return values are None for get fail and for put fail, so that can be used for error checking.

Sorry for the inconvenience,

Marco
From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Marco A. Barra Montevechi Filho via Tech-talk <tech-talk at aps.anl.gov>
Sent: 18 September 2023 17:39
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Spawn error when pyepics device puts into nonexistent PV
 
Hi all, im using pyepics device to interact with plugins.

I tried doing:

a = epics.Device("A", delim=":",attrs=["B"])
a.put("B", 4)

Since "A:B" is a nonexistent PV in my environment, i would expect an error or at least a warning here, but i get nothing.
It seems the attribute is a PV object and PV also dont have an option for raising an exception when put to nonexistent things:

a = epics.PV("A:B")
a.put(4)

Also returns no error. Is there any way to make this happen?
Would a PR in pyepics be welcome in this direction?

Thanks,

Marco

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References:
Spawn error when pyepics device puts into nonexistent PV Marco A. Barra Montevechi Filho via Tech-talk
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