Tests fail to run: import file mismatch

[yurivict]

• unyt version: 2.8.0
• Python version: 3.8
• Operating System: FreeBSD 13

Description

Running the pytest executable fails:

=========================================================================================== ERRORS ===========================================================================================
______________________________________________________________________ ERROR collecting unyt/tests/test_define_unit.py _______________________________________________________________________
import file mismatch:
imported module 'unyt.tests.test_define_unit' has this __file__ attribute:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/build/lib/unyt/tests/test_define_unit.py
which is not the same as the test file we want to collect:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/unyt/tests/test_define_unit.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules
________________________________________________________________________ ERROR collecting unyt/tests/test_linters.py _________________________________________________________________________
import file mismatch:
imported module 'unyt.tests.test_linters' has this __file__ attribute:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/build/lib/unyt/tests/test_linters.py
which is not the same as the test file we want to collect:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/unyt/tests/test_linters.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules
_____________________________________________________________________ ERROR collecting unyt/tests/test_mpl_interface.py ______________________________________________________________________
import file mismatch:
imported module 'unyt.tests.test_mpl_interface' has this __file__ attribute:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/build/lib/unyt/tests/test_mpl_interface.py
which is not the same as the test file we want to collect:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/unyt/tests/test_mpl_interface.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules
_____________________________________________________________________ ERROR collecting unyt/tests/test_unit_registry.py ______________________________________________________________________
import file mismatch:
imported module 'unyt.tests.test_unit_registry' has this __file__ attribute:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/build/lib/unyt/tests/test_unit_registry.py
which is not the same as the test file we want to collect:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/unyt/tests/test_unit_registry.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules
______________________________________________________________________ ERROR collecting unyt/tests/test_unit_systems.py ______________________________________________________________________
import file mismatch:
imported module 'unyt.tests.test_unit_systems' has this __file__ attribute:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/build/lib/unyt/tests/test_unit_systems.py
which is not the same as the test file we want to collect:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/unyt/tests/test_unit_systems.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules
_________________________________________________________________________ ERROR collecting unyt/tests/test_units.py __________________________________________________________________________
import file mismatch:
imported module 'unyt.tests.test_units' has this __file__ attribute:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/build/lib/unyt/tests/test_units.py
which is not the same as the test file we want to collect:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/unyt/tests/test_units.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules
_______________________________________________________________________ ERROR collecting unyt/tests/test_unyt_array.py _______________________________________________________________________
import file mismatch:
imported module 'unyt.tests.test_unyt_array' has this __file__ attribute:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/build/lib/unyt/tests/test_unyt_array.py
which is not the same as the test file we want to collect:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/unyt/tests/test_unyt_array.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules
______________________________________________________________________ ERROR collecting unyt/tests/test_unyt_testing.py ______________________________________________________________________
import file mismatch:
imported module 'unyt.tests.test_unyt_testing' has this __file__ attribute:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/build/lib/unyt/tests/test_unyt_testing.py
which is not the same as the test file we want to collect:
  /disk-samsung/freebsd-ports/math/py-unyt/work-py38/unyt-2.8.0/unyt/tests/test_unyt_testing.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 8 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
================================================================================== 8 error in 4.27 seconds ===================================================================================
*** Error code 2

[neutrinoceros]

This looks like the result of a dirty install. See
pytest-dev/pytest#8978

Don't hesitate to reopen in case the error persists after cleaning your local copy.

[yurivict]

In my case it's not a dirty install. The conflict is between .py files in the source tree and in the build directory,

[neutrinoceros]

Can you provide more detail ? how did you install unytt ? where do you run pytest from ?