0.8.1: pytest is failing because cannot find module named `is_always_missing`

I’m trying to package your module as an rpm package. So I’m using the typical PEP517 based build, install and test cycle used on building packages from non-root account.

• python3 -sBm build -w --no-isolation
• install .whl file in </install/prefix>
• run pytest with PYTHONPATH pointing to sitearch and sitelib inside </install/prefix>

May I ask where I can find that is_always_missing module? I canmot find it on pypi 😕 Here is pytest output:

+ PYTHONPATH=/home/tkloczko/rpmbuild/BUILDROOT/python-pytest-mypy-0.8.1-2.fc35.x86_64/usr/lib64/python3.8/site-packages:/home/tkloczko/rpmbuild/BUILDROOT/python-pytest-mypy-0.8.1-2.fc35.x86_64/usr/lib/python3.8/site-packages
+ /usr/bin/pytest -ra
=========================================================================== test session starts ============================================================================
platform linux -- Python 3.8.12, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /home/tkloczko/rpmbuild/BUILD/pytest-mypy-0.8.1, configfile: tox.ini, testpaths: tests
plugins: mypy-0.8.1, forked-1.4.0, xdist-2.5.0, cov-3.0.0, cases-3.6.7, flake8-1.0.7
collected 50 items

tests/test_pytest_mypy.py ............FFF...................................                                                                                         [100%]

================================================================================= FAILURES =================================================================================
_________________________________________________________________ test_mypy_ignore_missings_imports[True] __________________________________________________________________

testdir = <Testdir local('/tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports0')>, xdist_args = ['-n', 'auto']

    def test_mypy_ignore_missings_imports(testdir, xdist_args):
        """
        Verify that --mypy-ignore-missing-imports
        causes mypy to ignore missing imports.
        """
        module_name = "is_always_missing"
        testdir.makepyfile(
            """
                try:
                    import {module_name}
                except ImportError:
                    pass
            """.format(
                module_name=module_name,
            ),
        )
        result = testdir.runpytest_subprocess("--mypy", *xdist_args)
        mypy_file_checks = 1
        mypy_status_check = 1
        mypy_checks = mypy_file_checks + mypy_status_check
        result.assert_outcomes(failed=mypy_checks)
>       result.stdout.fnmatch_lines(
            [
                "2: error: Cannot find *module named '{module_name}'".format(
                    module_name=module_name,
                ),
            ],
        )
E       Failed: nomatch: "2: error: Cannot find *module named 'is_always_missing'"
E           and: '============================= test session starts =============================='
E           and: 'platform linux -- Python 3.8.12, pytest-6.2.5, py-1.11.0, pluggy-1.0.0'
E           and: 'rootdir: /tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports0'
E           and: 'plugins: mypy-0.8.1, forked-1.4.0, xdist-2.5.0, cov-3.0.0, cases-3.6.7, flake8-1.0.7'
E           and: 'gw0 I / gw1 I / gw2 I / gw3 I / gw4 I / gw5 I / gw6 I / gw7 I / gw8 I / gw9 I / gw10 I / gw11 I'
E           and: 'gw0 [2] / gw1 [2] / gw2 [2] / gw3 [2] / gw4 [2] / gw5 [2] / gw6 [2] / gw7 [2] / gw8 [2] / gw9 [2] / gw10 [2] / gw11 [2]'
E           and: ''
E           and: 'FF                                                                       [100%]'
E           and: '=================================== FAILURES ==================================='
E           and: '_________________________________ test session _________________________________'
E           and: '[gw1] linux -- Python 3.8.12 /usr/bin/python3'
E           and: 'mypy exited with status 1.'
E           and: '_____________________ test_mypy_ignore_missings_imports.py _____________________'
E           and: '[gw0] linux -- Python 3.8.12 /usr/bin/python3'
E           and: '2: error: Cannot find implementation or library stub for module named "is_always_missing"'
E           and: '2: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports'
E           and: '===================================== mypy ====================================='
E           and: 'Found 1 error in 1 file (checked 1 source file)'
E           and: '=========================== short test summary info ============================'
E           and: 'FAILED test_mypy_ignore_missings_imports.py::mypy-status'
E           and: 'FAILED test_mypy_ignore_missings_imports.py::mypy'
E           and: '============================== 2 failed in 13.08s =============================='
E       remains unmatched: "2: error: Cannot find *module named 'is_always_missing'"

/home/tkloczko/rpmbuild/BUILD/pytest-mypy-0.8.1/tests/test_pytest_mypy.py:119: Failed
--------------------------------------------------------------------------- Captured stdout call ---------------------------------------------------------------------------
running: /usr/bin/python3 -mpytest --basetemp=/tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports0/runpytest-0 --mypy -n auto
     in: /tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports0
============================= test session starts ==============================
platform linux -- Python 3.8.12, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports0
plugins: mypy-0.8.1, forked-1.4.0, xdist-2.5.0, cov-3.0.0, cases-3.6.7, flake8-1.0.7
gw0 I / gw1 I / gw2 I / gw3 I / gw4 I / gw5 I / gw6 I / gw7 I / gw8 I / gw9 I / gw10 I / gw11 I
gw0 [2] / gw1 [2] / gw2 [2] / gw3 [2] / gw4 [2] / gw5 [2] / gw6 [2] / gw7 [2] / gw8 [2] / gw9 [2] / gw10 [2] / gw11 [2]

FF                                                                       [100%]
=================================== FAILURES ===================================
_________________________________ test session _________________________________
[gw1] linux -- Python 3.8.12 /usr/bin/python3
mypy exited with status 1.
_____________________ test_mypy_ignore_missings_imports.py _____________________
[gw0] linux -- Python 3.8.12 /usr/bin/python3
2: error: Cannot find implementation or library stub for module named "is_always_missing"
2: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
===================================== mypy =====================================
Found 1 error in 1 file (checked 1 source file)
=========================== short test summary info ============================
FAILED test_mypy_ignore_missings_imports.py::mypy-status
FAILED test_mypy_ignore_missings_imports.py::mypy
============================== 2 failed in 13.08s ==============================
_________________________________________________________________ test_mypy_ignore_missings_imports[False] _________________________________________________________________

testdir = <Testdir local('/tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports1')>, xdist_args = []

    def test_mypy_ignore_missings_imports(testdir, xdist_args):
        """
        Verify that --mypy-ignore-missing-imports
        causes mypy to ignore missing imports.
        """
        module_name = "is_always_missing"
        testdir.makepyfile(
            """
                try:
                    import {module_name}
                except ImportError:
                    pass
            """.format(
                module_name=module_name,
            ),
        )
        result = testdir.runpytest_subprocess("--mypy", *xdist_args)
        mypy_file_checks = 1
        mypy_status_check = 1
        mypy_checks = mypy_file_checks + mypy_status_check
        result.assert_outcomes(failed=mypy_checks)
>       result.stdout.fnmatch_lines(
            [
                "2: error: Cannot find *module named '{module_name}'".format(
                    module_name=module_name,
                ),
            ],
        )
E       Failed: nomatch: "2: error: Cannot find *module named 'is_always_missing'"
E           and: '============================= test session starts =============================='
E           and: 'platform linux -- Python 3.8.12, pytest-6.2.5, py-1.11.0, pluggy-1.0.0'
E           and: 'rootdir: /tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports1'
E           and: 'plugins: mypy-0.8.1, forked-1.4.0, xdist-2.5.0, cov-3.0.0, cases-3.6.7, flake8-1.0.7'
E           and: 'collected 2 items'
E           and: ''
E           and: 'test_mypy_ignore_missings_imports.py FF                                  [100%]'
E           and: ''
E           and: '=================================== FAILURES ==================================='
E           and: '_____________________ test_mypy_ignore_missings_imports.py _____________________'
E           and: '2: error: Cannot find implementation or library stub for module named "is_always_missing"'
E           and: '2: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports'
E           and: '_________________________________ test session _________________________________'
E           and: 'mypy exited with status 1.'
E           and: '===================================== mypy ====================================='
E           and: 'Found 1 error in 1 file (checked 1 source file)'
E           and: '=========================== short test summary info ============================'
E           and: 'FAILED test_mypy_ignore_missings_imports.py::mypy'
E           and: 'FAILED test_mypy_ignore_missings_imports.py::mypy-status'
E           and: '============================== 2 failed in 11.33s =============================='
E       remains unmatched: "2: error: Cannot find *module named 'is_always_missing'"

/home/tkloczko/rpmbuild/BUILD/pytest-mypy-0.8.1/tests/test_pytest_mypy.py:119: Failed
--------------------------------------------------------------------------- Captured stdout call ---------------------------------------------------------------------------
running: /usr/bin/python3 -mpytest --basetemp=/tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports1/runpytest-0 --mypy
     in: /tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports1
============================= test session starts ==============================
platform linux -- Python 3.8.12, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports1
plugins: mypy-0.8.1, forked-1.4.0, xdist-2.5.0, cov-3.0.0, cases-3.6.7, flake8-1.0.7
collected 2 items

test_mypy_ignore_missings_imports.py FF                                  [100%]

=================================== FAILURES ===================================
_____________________ test_mypy_ignore_missings_imports.py _____________________
2: error: Cannot find implementation or library stub for module named "is_always_missing"
2: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
_________________________________ test session _________________________________
mypy exited with status 1.
===================================== mypy =====================================
Found 1 error in 1 file (checked 1 source file)
=========================== short test summary info ============================
FAILED test_mypy_ignore_missings_imports.py::mypy
FAILED test_mypy_ignore_missings_imports.py::mypy-status
============================== 2 failed in 11.33s ==============================
_________________________________________________________________ test_mypy_ignore_missings_imports[None] __________________________________________________________________

testdir = <Testdir local('/tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports2')>, xdist_args = ['-p', 'no:xdist']

    def test_mypy_ignore_missings_imports(testdir, xdist_args):
        """
        Verify that --mypy-ignore-missing-imports
        causes mypy to ignore missing imports.
        """
        module_name = "is_always_missing"
        testdir.makepyfile(
            """
                try:
                    import {module_name}
                except ImportError:
                    pass
            """.format(
                module_name=module_name,
            ),
        )
        result = testdir.runpytest_subprocess("--mypy", *xdist_args)
        mypy_file_checks = 1
        mypy_status_check = 1
        mypy_checks = mypy_file_checks + mypy_status_check
        result.assert_outcomes(failed=mypy_checks)
>       result.stdout.fnmatch_lines(
            [
                "2: error: Cannot find *module named '{module_name}'".format(
                    module_name=module_name,
                ),
            ],
        )
E       Failed: nomatch: "2: error: Cannot find *module named 'is_always_missing'"
E           and: '============================= test session starts =============================='
E           and: 'platform linux -- Python 3.8.12, pytest-6.2.5, py-1.11.0, pluggy-1.0.0'
E           and: 'rootdir: /tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports2'
E           and: 'plugins: mypy-0.8.1, forked-1.4.0, xdist-2.5.0, cov-3.0.0, cases-3.6.7, flake8-1.0.7'
E           and: 'collected 2 items'
E           and: ''
E           and: 'test_mypy_ignore_missings_imports.py FF                                  [100%]'
E           and: ''
E           and: '=================================== FAILURES ==================================='
E           and: '_____________________ test_mypy_ignore_missings_imports.py _____________________'
E           and: '2: error: Cannot find implementation or library stub for module named "is_always_missing"'
E           and: '2: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports'
E           and: '_________________________________ test session _________________________________'
E           and: 'mypy exited with status 1.'
E           and: '===================================== mypy ====================================='
E           and: 'Found 1 error in 1 file (checked 1 source file)'
E           and: '=========================== short test summary info ============================'
E           and: 'FAILED test_mypy_ignore_missings_imports.py::mypy'
E           and: 'FAILED test_mypy_ignore_missings_imports.py::mypy-status'
E           and: '============================== 2 failed in 11.25s =============================='
E       remains unmatched: "2: error: Cannot find *module named 'is_always_missing'"

/home/tkloczko/rpmbuild/BUILD/pytest-mypy-0.8.1/tests/test_pytest_mypy.py:119: Failed
--------------------------------------------------------------------------- Captured stdout call ---------------------------------------------------------------------------
running: /usr/bin/python3 -mpytest --basetemp=/tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports2/runpytest-0 --mypy -p no:xdist
     in: /tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports2
============================= test session starts ==============================
platform linux -- Python 3.8.12, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /tmp/pytest-of-tkloczko/pytest-551/test_mypy_ignore_missings_imports2
plugins: mypy-0.8.1, forked-1.4.0, xdist-2.5.0, cov-3.0.0, cases-3.6.7, flake8-1.0.7
collected 2 items

test_mypy_ignore_missings_imports.py FF                                  [100%]

=================================== FAILURES ===================================
_____________________ test_mypy_ignore_missings_imports.py _____________________
2: error: Cannot find implementation or library stub for module named "is_always_missing"
2: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
_________________________________ test session _________________________________
mypy exited with status 1.
===================================== mypy =====================================
Found 1 error in 1 file (checked 1 source file)
=========================== short test summary info ============================
FAILED test_mypy_ignore_missings_imports.py::mypy
FAILED test_mypy_ignore_missings_imports.py::mypy-status
============================== 2 failed in 11.25s ==============================
========================================================================= short test summary info ==========================================================================
FAILED tests/test_pytest_mypy.py::test_mypy_ignore_missings_imports[True] - Failed: nomatch: "2: error: Cannot find *module named 'is_always_missing'"
FAILED tests/test_pytest_mypy.py::test_mypy_ignore_missings_imports[False] - Failed: nomatch: "2: error: Cannot find *module named 'is_always_missing'"
FAILED tests/test_pytest_mypy.py::test_mypy_ignore_missings_imports[None] - Failed: nomatch: "2: error: Cannot find *module named 'is_always_missing'"
================================================================= 3 failed, 47 passed in 588.13s (0:09:48) =================================================================

[kloczek]

OK closing. All is fine 😄

+ /usr/bin/pytest -ra
=========================================================================== test session starts ============================================================================
platform linux -- Python 3.8.12, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /home/tkloczko/rpmbuild/BUILD/pytest-mypy-0.8.1, configfile: tox.ini, testpaths: tests
plugins: mypy-0.8.1, forked-1.4.0, xdist-2.5.0
collected 50 items

tests/test_pytest_mypy.py ..................................................                                                                                         [100%]

====================================================================== 50 passed in 290.96s (0:04:50) ======================================================================

[kloczek]

sh*t … one sec 😃