Experimental Physics and
Industrial Control System

Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov> · Tue, 6 Jul 2021 13:28:42 -0700

Version 3.5.4 of P4P (PV Access for Python) is available from github[1]
and pypi.org[2].  This release has two minor features, and no bug fixes.
3.5.4 builds published to pypi.org depend on an update of the epicscorelibs
python module to Base 7.0.6.  This includes a consistent set of python 3.9
builds.

Details and documentation can be found at:

https://mdavidsaver.github.io/p4p/

A couple of notes:

I've been investigating download statistics from pypi.org[3].  What I see is
that almost no one downloaded python 3.5 wheels in the past few months.
So I will probably discontinue wheels for 3.5 with future releases.
This will leave 2.7 and 3.6 through 3.9.

As for the future of 2.7 wheels...  These are still being downloaded, and I
sometimes use them myself.  I plan to continue as long as it isn't too much
extra effort.  Although it seems inevitable that my "too much" threshold
will be crossed at some point.

Similarly, at some point I'll drop support for numpy 1.6 and start requiring
>=1.7 (so I don't have to see all the API deprecation warnings).

So far published Linux builds on pypi.org have been in the 'manylinux1' container
image (aka. RHEL5).  This has been considered "end of life" for some time[4],
and is scheduled to become unsupported[5] at the end of the 2021.  I'm planning
to switch builds to the manylinux2014 image (aka. RHEL7) which is the oldest
image not currently at EoL.

Finally, at some point in the near future I'll begin publishing alpha
releases of P4P ported to use my PVXS library instead of pvAccessCPP[6].
These will start with P4P '4.0.0a1'.  I'll post again to tech-talk before
I start publishing regular 4.x releases.

[1] https://github.com/mdavidsaver/p4p

[2] https://pypi.org/project/p4p/

[3] https://packaging.python.org/guides/analyzing-pypi-package-downloads/

[4] https://github.com/pypa/manylinux#docker-images

[5] https://github.com/pypa/manylinux/issues/994

[6] https://github.com/mdavidsaver/p4p/pull/54

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System