Mailman 3 জুলাই 2020 - Python.NET

Multithreading/multiprocessing
by Alan Macdonald 5 মে, 2025

5 মে, 2025

Hello, has anyone successfully used multithreading or multiprocessing with Python.Net? I tried to multi-thread from the .Net side and the Python.Net libraries seem to have issues in the RunScript method. I had to take an implementation off the web of that method because the shipped method doesn’t seem to work. I then had a working multi-processing example from CPython that I tried from Python.Net but it gives an error 'module' object has no attribute 'argv' When trying to create a process pool by executing the line pool = Pool(processes=4) Is it possible to do multithreading or multiprocessing with Python.Net? Thanks, Alan

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Working group notes for July 30, 2020
by Mark Visser 30 জুলাই, 2020

30 জুলাই, 2020

Attendees: Amos, Victor, Mark, Benedikt, Mohamed Agenda Review action items from last meeting Benedikt - Check whether we need to change the `WITH_DEBUG` variant of PyObject_TYPE for newer versions of Python (> 3.8?) Benedikt - Add reference to backports-2.5 branch in README Benedikt - Switch to .NET Standard for everything but ClrModule Benedikt - Change project files to new format Victor - Consider adding a StolenReference type Benedikt - will look at Amos's fix for #891 issue in PR #958 Benedikt - will look into Python Buffer branch again Soft shutdown PR Notes Check whether we need to change the `WITH_DEBUG` variant of PyObject_TYPE for newer versions of Python (> 3.8?) in newer versions of Python WITH_DEBUG builds have the same layout we need to remove the special case not high priority right now since it's 3.9+ Switch to .NET Standard for everything but ClrModule Benedikt will complete today to unblock Mohamed Change project files to new format need to get rid of old project files and replace by new ones CLR module needs to stay on old format StolenReference type created issue for StolenReference type <https://github.com/pythonnet/pythonnet/issues/1193> Python Buffer branch again up for grabs if someone else wants to contribute is working fine - was held back until release because it's a Python 3-only branch should be ready to be merged once rebased Soft shutdown PR Unity will test before fall Python 3.9 multiphase initialization for modules used for subinterpreter support among other things every module is an object instead of a singleton can have multiple instances of a module thus there can be multiple instances of the clr module can be opted out of - see PEP 489 <https://www.python.org/dev/peps/pep-0489/> (other PEPs are based on it as well) may incur work on Python.NET side to support or disable PEP 554 <https://www.python.org/dev/peps/pep-0554/> also relevant (subinterpreters python API for 3.10) interesting for embedding use case of embedding Python into .NET nicer API seems like a good idea to leverage this for our own embedding API needs investigation Discussion on broken appveyor.yml fixed in PR #1175 <https://github.com/pythonnet/pythonnet/pull/1175> Action Items Benedikt to confirm WITH_DEBUG builds need to be updated for 3.9 (low priority) and will create issue to document for later Benedikt - Add reference to backports-2.5 branch in README Benedikt - Switch to .NET Standard for everything but ClrModule Benedikt - will look at Amos's fix for #891 issue in PR #958 Benedikt - will look into Python Buffer branch again Benedikt to look into weirdness with pycparser in appveyor.yml (see PR #1175 <https://github.com/pythonnet/pythonnet/pull/1175>) The meeting notes google doc is here <https://docs.google.com/document/d/1rJVU84B_dgx58-_EopjRtOJVFAI2WfHJYV0n7uE…>. Feel free to correct or add additional information. The next meeting will be held on Thursday, August 13 at 12pm EST (click for your time zone) <https://www.google.com/search?q=12:00+pm+EST>. Mark Visser M&E Dev Manager Unity Technologies - www.unity3d.com <http://www.unity3d.com/>

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how to install in sles12
by Ramesh Ponnada 25 জুলাই, 2020

25 জুলাই, 2020

Hi, i see error while installing pythonnet module in sles12 OS machine. could you please share us the steps. ./pip3 install pythonnet Collecting pythonnet Using cached Collecting pycparser py2.py3-none-any.whl <https://devpi.qualcomm.com/root/pypi/%2Bf/758/2ad22678f0fcd/pycparser-2.20-…> (112 kB) Building wheels for collected packages: pythonnet Building wheel for pythonnet (setup.py) ... error ERROR: Command errored out with exit status 1: command: /software/python/3.7.6/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-0fnlx7pb/pythonnet/setup.py'"'"'; __file__='"'"'/tmp/pip-install-0fnlx7pb/pythonnet/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-e5dshd8e cwd: /tmp/pip-install-0fnlx7pb/pythonnet/ -- Ramesh

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Working group notes for July 16, 2020
by Mark Visser 16 জুলাই, 2020

16 জুলাই, 2020

Attendees: Benedikt, Mark, Amos Agenda Review action items from last meeting Amos will try to fix soft shutdown 3.8 CI Victor will try to reproduce soft shutdown 3.8 CI failure Since the failure appears to be in codecs tests, Victor will try to check if any codecs fixes were not backported from Lost Tech branch Notes Soft shutdown - CI failure related to issue #891 <https://github.com/pythonnet/pythonnet/issues/891> see https://github.com/pythonnet/pythonnet/blob/master/src/runtime/runtime.cs#L… <https://github.com/pythonnet/pythonnet/blob/master/src/runtime/runtime.cs#L…> soft mode finished from Amos's side still need test cases for reload mode - may have stability issues Benedikt still reviewing hold off merging until we're sure it's stable Unity will do additional QA (use branch updated to master first) Still some polish to be done Some parts have already been merged to master via other PRs small PR #1175 - Remove unnecessary `CheckExceptionOccurred` calls <https://github.com/pythonnet/pythonnet/pull/1175> looks good comments from Victor to address quantconnect branches will close Action Items Benedikt - Check whether we need to change the `WITH_DEBUG` variant of PyObject_TYPE for newer versions of Python (> 3.8?) Benedikt - Add reference to backports-2.5 branch in README Benedikt - Switch to .NET Standard for everything but ClrModule Benedikt - Change project files to new format Victor - Consider adding a StolenReference type Benedikt - will look at Amos's fix for #891 issue in PR #958 Benedikt - will look into Python Buffer branch again The meeting notes google doc is here <https://docs.google.com/document/d/1rJVU84B_dgx58-_EopjRtOJVFAI2WfHJYV0n7uE…>. Feel free to correct or add additional information. The next meeting will be held on Thursday, July 30 at 12pm EST (click for your time zone) <https://www.google.com/search?q=12:00+pm+EST>. Mark Visser M&E Dev Manager Unity Technologies - www.unity3d.com <http://www.unity3d.com/>

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