ValueError: Plugin already registered

[iknownoth1ng]

D:.
└─fake_data
    │  conftest.py
    │  pytest.ini
    │  __init__.py
    │
    └─test_one
            test_haha.py
            __init__.py

I think this line of code in test.haha.py is the cause of the error. But I don't know why:

from fake_data.test_one import *

Situation 1: use pytest -sv -m test ; everything thing is ok!

Situation 2: use vscode plugin [code runner] python.exe d:/fake_date/test_haha.py ; everything thing is ok!

Situation 3: run in terminal, python.exe d:/fake_date/test_haha.py; then an error has occurred:

(base) PS D:\gitrepository\test_owl> & D:/python/anaconda3/python.exe -u d:/gitrepository/test_owl/fake_data/test_one/test_haha.py
========================================================= test session starts =========================================================
platform win32 -- Python 3.10.9, pytest-7.1.2, pluggy-1.0.0 -- D:\python\anaconda3\python.exe
cachedir: .pytest_cache
rootdir: d:\gitrepository\test_owl\fake_data, configfile: pytest.ini
plugins: anyio-3.5.0
collected 0 items
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\main.py", line 268, in wrap_session
INTERNALERROR>     session.exitstatus = doit(config, session) or 0
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\main.py", line 321, in _main
INTERNALERROR>     config.hook.pytest_collection(session=session)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\pluggy\_hooks.py", line 265, in __call__
INTERNALERROR>     return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\pluggy\_manager.py", line 80, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\pluggy\_callers.py", line 60, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\pluggy\_result.py", line 60, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\pluggy\_callers.py", line 39, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\main.py", line 332, in pytest_collection
INTERNALERROR>     session.perform_collect()
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\main.py", line 643, in perform_collect
INTERNALERROR>     rep = collect_one_node(self)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\runner.py", line 535, in collect_one_node
INTERNALERROR>     ihook = collector.ihook
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\nodes.py", line 269, in ihook
INTERNALERROR>     return self.session.gethookproxy(self.path)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\main.py", line 539, in gethookproxy
INTERNALERROR>     my_conftestmodules = pm._getconftestmodules(
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\config\__init__.py", line 575, in _getconftestmodules
INTERNALERROR>     mod = self._importconftest(conftestpath, importmode, rootpath)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\config\__init__.py", line 623, in _importconftest
INTERNALERROR>     self.consider_conftest(mod)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\config\__init__.py", line 704, in consider_conftest
INTERNALERROR>     self.register(conftestmodule, name=conftestmodule.__file__)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\_pytest\config\__init__.py", line 463, in register
INTERNALERROR>     ret: Optional[str] = super().register(plugin, name)
INTERNALERROR>   File "D:\python\anaconda3\lib\site-packages\pluggy\_manager.py", line 91, in register
INTERNALERROR>     raise ValueError(
INTERNALERROR> ValueError: Plugin already registered: D:\gitrepository\test_owl\fake_data\conftest.py=<module 'fake_data.conftest' from 
'D:\\gitrepository\\test_owl\\fake_data\\conftest.py'>
INTERNALERROR> {'2225410613904': <_pytest.config.PytestPluginManager object at 0x0000020624CF2290>, 'pytestconfig': <_pytest.config.Config object at 0x0000020625A3CF40>, 'mark': <module '_pytest.mark' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\mark\\__init__.py'>, 'main': <module '_pytest.main' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\main.py'>, 'runner': <module '_pytest.runner' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\runner.py'>, 'fixtures': <module '_pytest.fixtures' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\fixtures.py'>, 'helpconfig': <module '_pytest.helpconfig' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\helpconfig.py'>, 'python': <module '_pytest.python' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\python.py'>, 'terminal': <module '_pytest.terminal' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\terminal.py'>, 'debugging': <module '_pytest.debugging' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\debugging.py'>, 'unittest': <module '_pytest.unittest' 
from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\unittest.py'>, 'capture': <module '_pytest.capture' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\capture.py'>, 'skipping': <module '_pytest.skipping' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\skipping.py'>, 'legacypath': <module '_pytest.legacypath' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\legacypath.py'>, 'tmpdir': <module '_pytest.tmpdir' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\tmpdir.py'>, 'monkeypatch': <module '_pytest.monkeypatch' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\monkeypatch.py'>, 'recwarn': <module '_pytest.recwarn' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\recwarn.py'>, 'pastebin': <module '_pytest.pastebin' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\pastebin.py'>, 'nose': <module '_pytest.nose' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\nose.py'>, 'assertion': <module '_pytest.assertion' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\assertion\\__init__.py'>, 'junitxml': <module '_pytest.junitxml' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\junitxml.py'>, 'doctest': <module '_pytest.doctest' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\doctest.py'>, 'cacheprovider': <module '_pytest.cacheprovider' from 
'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\cacheprovider.py'>, 'freeze_support': <module '_pytest.freeze_support' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\freeze_support.py'>, 'setuponly': <module '_pytest.setuponly' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\setuponly.py'>, 'setupplan': <module '_pytest.setupplan' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\setupplan.py'>, 'stepwise': <module '_pytest.stepwise' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\stepwise.py'>, 'warnings': <module '_pytest.warnings' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\warnings.py'>, 'logging': <module '_pytest.logging' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\logging.py'>, 'reports': <module '_pytest.reports' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\reports.py'>, 'python_path': <module '_pytest.python_path' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\python_path.py'>, 'unraisableexception': <module '_pytest.unraisableexception' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\unraisableexception.py'>, 'threadexception': <module '_pytest.threadexception' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\threadexception.py'>, 'faulthandler': <module '_pytest.faulthandler' from 'D:\\python\\anaconda3\\lib\\site-packages\\_pytest\\faulthandler.py'>, 'anyio': <module 'anyio.pytest_plugin' from 'D:\\python\\anaconda3\\lib\\site-packages\\anyio\\pytest_plugin.py'>, 'capturemanager': <CaptureManager _method='no' _global_capturing=<MultiCapture out=None err=None in_=None _state='suspended' _in_suspended=False> _capture_fixture=None>, 'D:\\gitrepository\\test_owl\\fake_data\\conftest.py': <module 'fake_data.conftest' from 'D:\\gitrepository\\test_owl\\fake_data\\conftest.py'>, 'session': <Session fake_data exitstatus=<ExitCode.OK: 0> testsfailed=0 testscollected=0>, 'lfplugin': <_pytest.cacheprovider.LFPlugin object at 0x0000020625AFCCD0>, 'nfplugin': <_pytest.cacheprovider.NFPlugin object at 0x0000020625AFCB80>, 'legacypath-tmpdir': <class '_pytest.legacypath.LegacyTmpdirPlugin'>, 'terminalreporter': <_pytest.terminal.TerminalReporter object at 0x00000206265F1870>, 'logging-plugin': <_pytest.logging.LoggingPlugin object at 0x00000206265F3A90>, 'funcmanage': <_pytest.fixtures.FixtureManager object at 0x0000020625A3D0F0>}

======================================================== no tests ran in 0.05s ========================================================

test_owl.zip

[wu-clan]

Same question, any progress?

[iknownoth1ng]

use Linux

…

---- Replied Message ---- | From | Wu ***@***.***> | | Date | 10/31/2023 05:29 | | To | ***@***.***> | | Cc | ***@***.***>***@***.***> | | Subject | Re: [pytest-dev/pytest] ValueError: Plugin already registered (Issue #11273) | Same question, any progress? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[iknownoth1ng]

use Linux or use code runner

…

---- Replied Message ---- | From | Wu ***@***.***> | | Date | 10/31/2023 05:29 | | To | ***@***.***> | | Cc | ***@***.***>***@***.***> | | Subject | Re: [pytest-dev/pytest] ValueError: Plugin already registered (Issue #11273) | Same question, any progress? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[RonnyPfannschmidt]

can't duplicate the issue on linux

[wu-clan]

@RonnyPfannschmidt This issue seems to be specific to Windows only, Linux works fine!

[nicoddemus]

Can we have a reproducible example? The posted example mentions running python.exe d:/fake_date/test_myfile.py, which does not exist in the original, and following that it shows a pytest session.

I did try to use the example as basis and run pytest fake_data/test_one/test_haha.py, but it passes for me. At this point is not worth trying to force the error to manifest as I might be diverging from the original problem.

[iknownoth1ng]

@nicoddemus
did you downloaded this zip file?

[The-Compiler]

That zip file does indeed not contain a test_myfile.py.

[iknownoth1ng]

i'm so sorry. it's test_haha.py

[nicoddemus]

Oh sorry indeed I missed the zipfile.

Hmm still unable to reproduce:

λ pytest fake_data\
======================== test session starts ========================
platform win32 -- Python 3.10.10, pytest-8.0.0.dev306+g05c69889d.d20231103, pluggy-1.3.0
rootdir: e:\projects\pytest\.tmp\fake_data
configfile: pytest.ini
plugins: hypothesis-6.84.0, replay-1.4.0, xdist-3.3.1
collected 1 item

fake_data\test_one\test_haha.py .                              [100%]

========================= 1 passed in 0.02s =========================

λ pytest fake_data\test_one\test_haha.py
======================== test session starts ========================
platform win32 -- Python 3.10.10, pytest-8.0.0.dev306+g05c69889d.d20231103, pluggy-1.3.0
rootdir: e:\projects\pytest\.tmp\fake_data
configfile: pytest.ini
plugins: hypothesis-6.84.0, replay-1.4.0, xdist-3.3.1
collected 1 item

fake_data\test_one\test_haha.py .                              [100%]

========================= 1 passed in 0.02s =========================

Seems like you are executing this using python -m IPython´ per your screenshot? What happens if you execute using pytest`?

[iknownoth1ng]

1.Situation 1 is ok ! Situation 3 is failed !
2. not use ipython

[github-actions]

This issue is stale because it has been open for 14 days with no activity.