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concurrent usage of settrace doesn't work in Python ecosystem #97

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tarpas opened this issue Apr 21, 2018 · 4 comments
Open

concurrent usage of settrace doesn't work in Python ecosystem #97

tarpas opened this issue Apr 21, 2018 · 4 comments
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@tarpas
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tarpas commented Apr 21, 2018 •
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As a result, testmon is not compatible with most debuggers, tracing and coverage tools.
From:
https://coverage.readthedocs.io/en/6.5.0/trouble.html#things-that-don-t-work
sys.settrace is the Python feature that coverage.py uses to see what’s happening in your program. If another part of your program is using sys.settrace, then it will conflict with coverage.py, and it won’t be measured properly.
This was referenced Apr 21, 2018
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@webknjaz webknjaz mentioned this issue Apr 21, 2018
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webknjaz added a commit to cherrypy/cheroot that referenced this issue Apr 21, 2018
@webknjaz
Revert 8a161e8 and fix #71 with a workaround
26eea5c 
pytest-testmon is incompatible with pytest-cov now, because they
compete on using sys.settrace hook

Refs:
* tarpas/pytest-testmon#86
* tarpas/pytest-testmon#97
* https://coverage.readthedocs.io/en/coverage-4.5.1/trouble.html#things-that-don-t-work
@tarpas
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tarpas commented Aug 1, 2018

Reading https://nedbatchelder.com/text/trace-function.html this is unlikely to be fixed very soon....

@tarpas tarpas mentioned this issue Aug 1, 2018
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@max-sixty
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xref https://bitbucket.org/ned/coveragepy/issues/647/coveragepy-doesnt-seem-to-work-with

@blueyed blueyed mentioned this issue Feb 21, 2019
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@webknjaz
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http://coverage.readthedocs.io/en/coverage-4.5.1/trouble.html

Updated link: https://coverage.readthedocs.io/en/6.5.0/trouble.html#things-that-don-t-work

@xianyuanliu xianyuanliu mentioned this issue Oct 16, 2023
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@gszep
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gszep commented Jan 10, 2024

what is the state of play on this? Is there a roadmap to pytest-testmon moving away from using settrace?

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