Python testsuite fails: cannot import name '_gtar' from partially initialized module 'gtar'

[yurivict]

===>  Testing for py39-libgetar-1.1.3
===>   py39-libgetar-1.1.3 depends on package: py39-pytest>=7,1 - found
===>   py39-libgetar-1.1.3 depends on file: /usr/local/bin/python3.9 - found
cd /disk-samsung/freebsd-ports/science/py-libgetar/work-py39/libgetar-1.1.3 && /usr/bin/env XDG_DATA_HOME=/disk-samsung/freebsd-ports/science/py-libgetar/work-py39  XDG_CONFIG_HOME=/disk-samsung/freebsd-ports/science/py-libgetar/work-py39  XDG_CACHE_HOME=/disk-samsung/freebsd-ports/science/py-libgetar/work-py39/.cache  HOME=/disk-samsung/freebsd-ports/science/py-libgetar/work-py39 PATH=/disk-samsung/freebsd-ports/science/py-libgetar/work-py39/.bin:/home/yuri/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin NO_PIE=yes MK_DEBUG_FILES=no MK_KERNEL_SYMBOLS=no SHELL=/bin/sh NO_LINT=YES LDSHARED="cc -shared" PYTHONDONTWRITEBYTECODE= PYTHONOPTIMIZE= PREFIX=/usr/local  LOCALBASE=/usr/local  CC="cc" CFLAGS="-O2 -pipe -fno-omit-frame-pointer  -fstack-protector-strong -fno-strict-aliasing "  CPP="cpp" CPPFLAGS="-fno-omit-frame-pointer"  LDFLAGS=" -fstack-protector-strong " LIBS=""  CXX="c++" CXXFLAGS="-O2 -pipe -fno-omit-frame-pointer -fstack-protector-strong -fno-strict-aliasing -fno-omit-frame-pointer  "  MANPREFIX="/usr/local" BSD_INSTALL_PROGRAM="install  -s -m 555"  BSD_INSTALL_LIB="install  -s -m 0644"  BSD_INSTALL_SCRIPT="install  -m 555"  BSD_INSTALL_DATA="install  -m 0644"  BSD_INSTALL_MAN="install  -m 444" PYTHONPATH=/disk-samsung/freebsd-ports/science/py-libgetar/work-py39/stage/usr/local/lib/python3.9/site-packages /usr/local/bin/python3.9 -m pytest -k '' -rs -v -o addopts= 
==================================================================================== test session starts =====================================================================================
platform freebsd13 -- Python 3.9.13, pytest-7.1.2, pluggy-1.0.0 -- /usr/local/bin/python3.9
cachedir: .pytest_cache
rootdir: /disk-samsung/freebsd-ports/science/py-libgetar/work-py39/libgetar-1.1.3
plugins: typeguard-2.13.3
collected 0 items / 3 errors                                                                                                                                                                 

=========================================================================================== ERRORS ===========================================================================================
_____________________________________________________________________________ ERROR collecting test/test_gtar.py _____________________________________________________________________________
ImportError while importing test module '/disk-samsung/freebsd-ports/science/py-libgetar/work-py39/libgetar-1.1.3/test/test_gtar.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/local/lib/python3.9/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
test/test_gtar.py:4: in <module>
    import gtar
gtar/__init__.py:2: in <module>
    from . import _gtar
E   ImportError: cannot import name '_gtar' from partially initialized module 'gtar' (most likely due to a circular import) (/disk-samsung/freebsd-ports/science/py-libgetar/work-py39/libgetar-1.1.3/gtar/__init__.py)
____________________________________________________________________________ ERROR collecting test/test_record.py ____________________________________________________________________________
ImportError while importing test module '/disk-samsung/freebsd-ports/science/py-libgetar/work-py39/libgetar-1.1.3/test/test_record.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/local/lib/python3.9/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
test/test_record.py:3: in <module>
    import gtar
gtar/__init__.py:2: in <module>
    from . import _gtar
E   ImportError: cannot import name '_gtar' from partially initialized module 'gtar' (most likely due to a circular import) (/disk-samsung/freebsd-ports/science/py-libgetar/work-py39/libgetar-1.1.3/gtar/__init__.py)
____________________________________________________________________________ ERROR collecting test/test_widths.py ____________________________________________________________________________
ImportError while importing test module '/disk-samsung/freebsd-ports/science/py-libgetar/work-py39/libgetar-1.1.3/test/test_widths.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/local/lib/python3.9/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
test/test_widths.py:2: in <module>
    import gtar
gtar/__init__.py:2: in <module>
    from . import _gtar
E   ImportError: cannot import name '_gtar' from partially initialized module 'gtar' (most likely due to a circular import) (/disk-samsung/freebsd-ports/science/py-libgetar/work-py39/libgetar-1.1.3/gtar/__init__.py)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 3 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
===================================================================================== 3 errors in 0.67s ======================================================================================
*** Error code 2

[klarh]

This looks like the source directory is trying to be directly imported as the library. Since this library uses a python C extension for most of the heavy lifting, the extension needs to be compiled (typically by just using pip or, alternatively, the setup.py directly). Assuming this is the case, could you try installing the library first?

[yurivict]

Is testing done simply with python -c 'import gtar' or is there a testsuit?

[klarh]

You can run the tests with python -m unittest discover from the test directory. As a side note, to potentially help with this issue for future users, I've added a section to the documentation at https://libgetar.readthedocs.io/en/latest/issues.html#importerror-cannot-import-name-gtar-from-partially-initialized-module-gtar (since commit 3a46585).

[yurivict]

Thanks!