Experimental Physics and
Industrial Control System

Florian Feldbauer via Tech-talk <[email protected]> · Tue, 18 Jun 2019 14:47:57 +0200

Hey,

as I wrote in my firsts mail: I'm running Debian stretch (64 bit). The

version of python3 from the apt-repositories is 3.5

~ > uname -a

Linux lenovoT450s 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1+deb9u2

(2019-05-13) x86_64 GNU/Linux

~ > python3 -c "import sys; print(sys.version_info)"

sys.version_info(major=3, minor=5, micro=3, releaselevel='final',

serial=0)

If the requirement is python3.6, it is clear why it is not working on my

system.

But p4p works for me!

Cheers,
Florian

On 6/18/19 2:43 PM, Siniša Veseli via Tech-talk wrote:

Okay, you either have 32-bit machine or python version lower than 3.6.

If you send me the output of the following two commands, I will build
the packages for your platform:

uname -a

python -c "import sys; print(sys.version_info)"

Thanks,

Sinisa

On 6/18/19 1:53 AM, Florian Feldbauer via Tech-talk wrote:

Hey,

here is the output of `pip3 install -v pvapy` on my system:

The error is "Could not find a version that satisfies the requirement
pvapy (from versions: )"

Cheers,
Florian

~ > pip3 install -v pvapy
Converted retries value: Retry(total=5, connect=None, read=None,
redirect=None) -> Retry(total=Retry(total=5, connect=None, read=None,
redirect=None), connect=None, read=None, redirect=None)
Converted retries value: Retry(total=5, connect=None, read=None,
redirect=None) -> Retry(total=Retry(total=5, connect=None, read=None,
redirect=None), connect=None, read=None, redirect=None)
Collecting pvapy
   1 location(s) to search for versions of pvapy:
   * https://pypi.python.org/simple/pvapy/
   Getting page https://pypi.python.org/simple/pvapy/
   Looking up "https://pypi.python.org/simple/pvapy/"; in the cache
   Returning cached "301 Moved Permanently" response (ignoring date
and etag information)
   Looking up "https://pypi.org/simple/pvapy/"; in the cache
   Current age based on date: 22
   Freshness lifetime from max-age: 600
   Freshness lifetime from request max-age: 600
   The response is "fresh", returning cached response
   600 > 22
   Analyzing links from page https://pypi.org/simple/pvapy/
     Skipping link
https://files.pythonhosted.org/packages/90/4c/070a0ac1fac05426e32b839b6e1f2a8e8e2c4fc7e458c18be59d2ad3bd67/pvapy-1.3.0-cp27-cp27m-manylinux1_x86_64.whl#sha256=166092f770797f205de2ab74dff00d79131abde3608096809161ea07094be74f
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/a3/77/99ecd2ccc5939019759bbd5020c0053b3fa43fbf1c9b35f098ed11c6a52d/pvapy-1.3.0-cp27-cp27mu-manylinux1_x86_64.whl#sha256=c4318e0b3c89d906e844ffe0f83ece16d660dffc02ac5289a407441016a8405e
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/63/1e/dccb319a575b2979244525f0756ffaaaf580c0551411cf346fb027a5b5c3/pvapy-1.3.0-cp36-cp36m-manylinux1_x86_64.whl#sha256=90db333adb7c284a1057b26e51ffb852bac1bf21c44b08e5b225535f602f9fae
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/59/74/e1073af9f9f3198862614d31ddc74ab6d591c234ad9e8e47e95fe82ae0da/pvapy-1.3.0-cp37-cp37m-manylinux1_x86_64.whl#sha256=4f57e0c74a7c572e09602ebbac4a58a18e636fc338413eac27292bad09cb3d18
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/00/27/19d4d68a5c0bac0cee099851308146e688d95f2b19878c2637390783f80c/pvapy-1.4.0-cp27-cp27m-manylinux1_x86_64.whl#sha256=1bfdf2d6748acc502fc7da4b48925192986c66a48e7713587d9452a74ff385d4
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/00/ea/d9efb150ca7d00df06458578ad8c662dc9486bf7f05efbe068cb287755e6/pvapy-1.4.0-cp27-cp27mu-manylinux1_x86_64.whl#sha256=6013f8ea4c4ba6f862fbca918584dfdcdc041b7ebd7da56b49ee379c94edb90a
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/f1/63/1aa389e9c915601ef11d2458d4fa081b9146313606ca32cbeb3c30268505/pvapy-1.4.0-cp36-cp36m-manylinux1_x86_64.whl#sha256=39070ce21e3be14078c6e764d6219bce6ef73d0620719e8462a24272b97490b5
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/0d/75/ab1e3f73982837dd411e660860c301af8d1781503b5206a802e8867f35c4/pvapy-1.4.0-cp37-cp37m-manylinux1_x86_64.whl#sha256=53bbcd129ef9890908ca8fa7f7f1051731befeea04450802c3110ce3c50baffd
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/02/cc/7dc95ad0c8d07ba83bda7bf81e7a912e274fdb1afb4d553bf0f4633d7bb3/pvapy-1.5.0-cp27-cp27m-manylinux1_x86_64.whl#sha256=b0c29e50d28f071a19c22ec2545f8f1dfd0918a8965f599eb8e0c5b5f2394527
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/bd/e2/0f9538a1aac48f9aee38218c7e4d40625579acee45dfbbfc3eb281a4f0cb/pvapy-1.5.0-cp27-cp27mu-manylinux1_x86_64.whl#sha256=c87467ed278cdae7ecaffc710c99e37be05683a0c5948e7802fbfb97ad0885c6
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/3c/8d/be0183a7f2177e81bee3c8b362aabbc236e3d1e8fd825da613856b5c28bc/pvapy-1.5.0-cp36-cp36m-manylinux1_x86_64.whl#sha256=a0597bd0278e578eae425daf01a92d38e05a945b03e8121bf0e4e930cd492d00
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/a3/d9/26a1a069a02ef22dd9690231a6d7795ef2678540f1e6b311db26ae94ca69/pvapy-1.5.0-cp37-cp37m-manylinux1_x86_64.whl#sha256=dac2587f1fc48b08bd41fae994e44feffe70884dfb148303743875258b743666
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/a3/4a/13f1eaba6ab2278563574213ad660e0108a91b8c9947eedf5dead0531994/pvapy-1.6.0-cp27-cp27m-manylinux1_x86_64.whl#sha256=58a9b9ad5ef4ba31d35dabffb5ab0c3803e9615393c3c9dfc211d9bc11e28cf8
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/1f/60/1aba5817709aa14589b8ac61f7c8aa75693e6ee00bf24b6d02a7f6296aea/pvapy-1.6.0-cp27-cp27mu-manylinux1_x86_64.whl#sha256=92a5fde532ba80a76c0e6fe398bd89aadaa5136b8982c11f285eec066b572d1d
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/39/41/9672263b80b3d107ca5a6e530d216393537e6346c31cb4a69d84bbb3299d/pvapy-1.6.0-cp36-cp36m-manylinux1_x86_64.whl#sha256=ff7be7169e787d10d08bc1eb2bd4b419fdd8514fc49fdfa0b0daa1022b8a8e95
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
     Skipping link
https://files.pythonhosted.org/packages/58/f5/00699c4ecf95d9ac9313496fd3dc19370fc73c36a69d9243d5c500f9fec8/pvapy-1.6.0-cp37-cp37m-manylinux1_x86_64.whl#sha256=4041b11d2cdd024357ab9313f38d8197c8c43f8c88dc7491e624d6401e62b181
(from https://pypi.org/simple/pvapy/); it is not compatible with this
Python
   Could not find a version that satisfies the requirement pvapy (from
versions: )
Cleaning up...
No matching distribution found for pvapy
Exception information:
Traceback (most recent call last):
   File "/usr/lib/python3/dist-packages/pip/basecommand.py", line 215,
in main
     status = self.run(options, args)
   File "/usr/lib/python3/dist-packages/pip/commands/install.py", line
353, in run
     wb.build(autobuilding=True)
   File "/usr/lib/python3/dist-packages/pip/wheel.py", line 749, in build
     self.requirement_set.prepare_files(self.finder)
   File "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 380,
in prepare_files
     ignore_dependencies=self.ignore_dependencies))
   File "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 554,
in _prepare_file
     require_hashes
   File "/usr/lib/python3/dist-packages/pip/req/req_install.py", line
278, in populate_link
     self.link = finder.find_requirement(self, upgrade)
   File "/usr/lib/python3/dist-packages/pip/index.py", line 514, in
find_requirement
     'No matching distribution found for %s' % req
pip.exceptions.DistributionNotFound: No matching distribution found
for pvapy

On 6/17/19 9:58 PM, Siniša Veseli via Tech-talk wrote:

Hello,

The "pvaccess" python module is part of pvapy, which you should be able
to get via conda or pip.

What was the problem with your pvapy pip install?

Thanks,

Sinisa

On 6/17/19 12:05 PM, Florian Feldbauer via Tech-talk wrote:

Hey Kay and David,

during the EPICS7 training at the collaboration meeting, we were using
a PVA client written in python.
This client imports the module "pvaccess".

For a small project I wanted to write my own PVA client in python, but
I cannot find this library.
Using `pip search pvaccess` I found a module called p4p (maintained by
David?) instead.
Googeling I found also pvapy which I could not install via pip.

Are there any recommendations which module to use?

In case it matters: My environment is Debian Stretch with Base 7.0.2.2.

Best regards,
Florian

--
Dr. Florian Feldbauer

Ruhr-Universität Bochum
Experimentalphysik I AG
Universitätsstr. 150
Fach-Nr. 125
D-44801 Bochum

Office: NB 2/134
Phone:  (+49)234 / 32-23563
Fax:    (+49)234 / 32-14170
https://paluma.ruhr-uni-bochum.de

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System