Bug 2440562

pylint fails to build with Python 3.15.0a6.

____________ TestImportsChecker.test_relative_beyond_top_level_two _____________
[gw0] linux -- Python 3.15.0 /usr/bin/python3

self = NamespacePath(['/builddir/build/BUILD/pylint-4.0.4-build/pylint-4.0.4/tests/regrtest_data/beyond_top_two/namespace_package/lower_level'])

>   ???
E   KeyError: 'namespace_package'

<frozen importlib._bootstrap_external>:1094: KeyError

The above exception was the direct cause of the following exception:

capsys = <_pytest.capture.CaptureFixture object at 0x7f53e559f380>

    @staticmethod
    def test_relative_beyond_top_level_two(capsys: CaptureFixture[str]) -> None:
>       Run(
            [
                f"{os.path.join(REGR_DATA, 'beyond_top_two')}",
                "-d all",
                "-e relative-beyond-top-level",
            ],
            exit=False,
        )

tests/checkers/unittest_imports.py:45: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/testutils/_run.py:41: in __init__
    super().__init__(args, reporter, exit)
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/run.py:239: in __init__
    linter.check(args)
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/pylinter.py:722: in check
    ast_per_fileitem = self._get_asts(fileitems, data, progress_reporter)
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/pylinter.py:740: in _get_asts
    for fileitem in fileitems:
                    ^^^^^^^^^
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/pylinter.py:908: in _iterate_file_descrs
    for descr in self._expand_files(files_or_modules).values():
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/pylinter.py:919: in _expand_files
    result, errors = expand_modules(
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/expand_modules.py:171: in expand_modules
    modpath = _modpath_from_file(
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/expand_modules.py:22: in _modpath_from_file
    return modutils.modpath_from_file_with_callback(  # type: ignore[no-any-return]
/usr/lib/python3.15/site-packages/astroid/modutils.py:294: in modpath_from_file_with_callback
    if is_package_cb(pathname, modpath[:-1]):
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/expand_modules.py:20: in _is_package_cb
    return modutils.check_modpath_has_init(inner_path, parts) or is_namespace
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/usr/lib/python3.15/site-packages/astroid/modutils.py:229: in check_modpath_has_init
    old_namespace = util.is_namespace(".".join(modpath))
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/usr/lib/python3.15/site-packages/astroid/interpreter/_import/util.py:47: in is_namespace
    found_spec = _find_spec_from_path(
<frozen importlib.util>:54: in _find_spec_from_path
    ???
<frozen importlib._bootstrap>:1164: in _find_spec
    ???
<frozen importlib._bootstrap_external>:1279: in find_spec
    ???
<frozen importlib._bootstrap_external>:1077: in __init__
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = NamespacePath(['/builddir/build/BUILD/pylint-4.0.4-build/pylint-4.0.4/tests/regrtest_data/beyond_top_two/namespace_package/lower_level'])

>   ???
E   ModuleNotFoundError: 'namespace_package' must be imported before finding 'namespace_package.lower_level'.

<frozen importlib._bootstrap_external>:1096: ModuleNotFoundError
_________________________ test_class_diagrams[pep420] __________________________
[gw1] linux -- Python 3.15.0 /usr/bin/python3

testfile = FunctionalPyreverseTestfile(source=PosixPath('/builddir/build/BUILD/pylint-4.0.4-build/pylint-4.0.4/tests/pyreverse/fu...20/pep420.py'), options={'source_roots': ['../..'], 'output_formats': ['mmd', 'dot', 'puml'], 'command_line_args': []})
tmp_path = PosixPath('/tmp/pytest-of-mockbuild/pytest-0/popen-gw1/test_class_diagrams_pep420_0')

    @pytest.mark.parametrize(
        "testfile",
        CLASS_DIAGRAM_TESTS,
        ids=CLASS_DIAGRAM_TEST_IDS,
    )
    def test_class_diagrams(testfile: FunctionalPyreverseTestfile, tmp_path: Path) -> None:
        input_file = testfile.source
        input_path = os.path.dirname(input_file)
        if testfile.options["source_roots"]:
            source_roots = ",".join(
                [
                    os.path.realpath(
                        os.path.expanduser(os.path.join(input_path, source_root))
                    )
                    for source_root in testfile.options["source_roots"]
                ]
            )
        else:
            source_roots = ""
        for output_format in testfile.options["output_formats"]:
            args = ["-o", f"{output_format}", "-d", str(tmp_path)]
            if source_roots:
                args += ["--source-roots", source_roots]
            args.extend(testfile.options["command_line_args"])
            args += [str(input_file)]
            exit_code = Run(args).run()
            assert exit_code == 0
>           assert testfile.source.with_suffix(f".{output_format}").read_text(
                encoding="utf8"
            ) == (tmp_path / f"classes.{output_format}").read_text(encoding="utf8")
E           assert 'digraph "cla...solid"];\n}\n' == 'digraph "cla...solid"];\n}\n'
E             
E               digraph "classes" {
E               rankdir=BT
E               charset="utf-8"
E             - "/builddir/build/BUILD/pylint-4.0.4-build/pylint-4.0.4/tests/pyreverse/functional/class_diagrams/namespaces/pep420/pep420.py.PEP420" [color="black", fontcolor="black", label=<{PEP420|<br ALIGN="LEFT"/>|}>, shape="record", style="solid"];
E             + "namespaces.pep420.pep420.PEP420" [color="black", fontcolor="black", label=<{PEP420|<br ALIGN="LEFT"/>|}>, shape="record", style="solid"];
E               }

tests/pyreverse/test_pyreverse_functional.py:48: AssertionError
__________________ test_recursive_implicit_namespace_wrapper ___________________
[gw2] linux -- Python 3.15.0 /usr/bin/python3

self = NamespacePath(['/builddir/build/BUILD/pylint-4.0.4-build/pylint-4.0.4/tests/regrtest_data/pep420/wrapper/project/namespace/package'])

>   ???
E   KeyError: 'namespace'

<frozen importlib._bootstrap_external>:1094: KeyError

The above exception was the direct cause of the following exception:

    def test_recursive_implicit_namespace_wrapper() -> None:
>       run = Run(
            [
                "--recursive",
                "y",
                "--source-roots",
                join(REGRTEST_DATA_DIR, "pep420", "wrapper", "project"),
                join(REGRTEST_DATA_DIR, "pep420", "wrapper"),
            ],
            exit=False,
        )

tests/lint/unittest_lint.py:1169: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/testutils/_run.py:41: in __init__
    super().__init__(args, reporter, exit)
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/run.py:239: in __init__
    linter.check(args)
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/pylinter.py:722: in check
    ast_per_fileitem = self._get_asts(fileitems, data, progress_reporter)
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/pylinter.py:740: in _get_asts
    for fileitem in fileitems:
                    ^^^^^^^^^
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/pylinter.py:908: in _iterate_file_descrs
    for descr in self._expand_files(files_or_modules).values():
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/pylinter.py:919: in _expand_files
    result, errors = expand_modules(
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/expand_modules.py:171: in expand_modules
    modpath = _modpath_from_file(
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/expand_modules.py:22: in _modpath_from_file
    return modutils.modpath_from_file_with_callback(  # type: ignore[no-any-return]
/usr/lib/python3.15/site-packages/astroid/modutils.py:294: in modpath_from_file_with_callback
    if is_package_cb(pathname, modpath[:-1]):
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../BUILDROOT/usr/lib/python3.15/site-packages/pylint/lint/expand_modules.py:20: in _is_package_cb
    return modutils.check_modpath_has_init(inner_path, parts) or is_namespace
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/usr/lib/python3.15/site-packages/astroid/modutils.py:229: in check_modpath_has_init
    old_namespace = util.is_namespace(".".join(modpath))
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/usr/lib/python3.15/site-packages/astroid/interpreter/_import/util.py:47: in is_namespace
    found_spec = _find_spec_from_path(
<frozen importlib.util>:54: in _find_spec_from_path
    ???
<frozen importlib._bootstrap>:1164: in _find_spec
    ???
<frozen importlib._bootstrap_external>:1279: in find_spec
    ???
<frozen importlib._bootstrap_external>:1077: in __init__
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = NamespacePath(['/builddir/build/BUILD/pylint-4.0.4-build/pylint-4.0.4/tests/regrtest_data/pep420/wrapper/project/namespace/package'])

>   ???
E   ModuleNotFoundError: 'namespace' must be imported before finding 'namespace.package'.

<frozen importlib._bootstrap_external>:1096: ModuleNotFoundError
___________________ test_functional[deprecated_methods_py36] ___________________
[gw3] linux -- Python 3.15.0 /usr/bin/python3

self = <pylint.testutils.lint_module_test.LintModuleTest object at 0x7f0a30890f50>

    def runTest(self) -> None:
>       self._runTest()
E       AssertionError: Wrong message(s) raised for "deprecated_methods_py36.py":
E       
E       Expected in testdata:
E          6: deprecated-method (times 1)
E          7: deprecated-method (times 1)
E       
E       Unexpected in testdata:
E          6: no-member (times 1)
E          7: no-member (times 1)
E       
E       Actual pylint output for this file:
E       OutputLine(symbol='no-member', lineno=6, column=0, end_lineno=6, end_column=59, object='', msg="Instance of 'SourceFileLoader' has no 'load_module' member", confidence='INFERENCE')
E       OutputLine(symbol='no-member', lineno=7, column=0, end_lineno=7, end_column=63, object='', msg="Instance of 'SourcelessFileLoader' has no 'load_module' member", confidence='INFERENCE')

../BUILDROOT/usr/lib/python3.15/site-packages/pylint/testutils/lint_module_test.py:145: AssertionError
______________________ test_functional[no_name_in_module] ______________________
[gw0] linux -- Python 3.15.0 /usr/bin/python3

self = <pylint.testutils.lint_module_test.LintModuleTest object at 0x7f53dca997f0>

    def runTest(self) -> None:
>       self._runTest()
E       AssertionError: Wrong message(s) raised for "no_name_in_module.py":
E       
E       Expected in testdata:
E         10: no-member (times 1)
E         11: no-member (times 1)
E       
E       Actual pylint output for this file:
E       OutputLine(symbol='no-name-in-module', lineno=5, column=0, end_lineno=5, end_column=23, object='', msg="No name 'tutu' in module 'collections'", confidence='UNDEFINED')
E       OutputLine(symbol='no-name-in-module', lineno=6, column=0, end_lineno=6, end_column=28, object='', msg="No name 'toto' in module 'collections'", confidence='UNDEFINED')
E       OutputLine(symbol='no-member', lineno=16, column=6, end_lineno=16, end_column=17, object='', msg="Module 'sys' has no 'stdoout' member; maybe 'stdout'?", confidence='INFERENCE')
E       OutputLine(symbol='no-name-in-module', lineno=23, column=0, end_lineno=23, end_column=34, object='', msg="No name 'compiile' in module 're'", confidence='UNDEFINED')
E       OutputLine(symbol='no-name-in-module', lineno=23, column=0, end_lineno=23, end_column=34, object='', msg="No name 'findiiter' in module 're'", confidence='UNDEFINED')
E       OutputLine(symbol='pointless-statement', lineno=26, column=0, end_lineno=26, end_column=23, object='', msg='Statement seems to have no effect', confidence='UNDEFINED')
E       OutputLine(symbol='no-name-in-module', lineno=34, column=4, end_lineno=34, end_column=36, object='', msg="No name 'anything' in module 'collections'", confidence='UNDEFINED')
E       OutputLine(symbol='no-name-in-module', lineno=49, column=4, end_lineno=49, end_column=37, object='', msg="No name 'indeed_missing' in module 'collections'", confidence='UNDEFINED')
E       OutputLine(symbol='no-name-in-module', lineno=54, column=4, end_lineno=54, end_column=27, object='', msg="No name 'emit' in module 'collections'", confidence='UNDEFINED')
E       OutputLine(symbol='no-name-in-module', lineno=71, column=8, end_lineno=71, end_column=32, object='', msg="No name 'emit2' in module 'collections'", confidence='UNDEFINED')
E       OutputLine(symbol='no-name-in-module', lineno=76, column=0, end_lineno=76, end_column=34, object='', msg="No name 'lala' in module 'functional.n.no.no_self_argument'", confidence='UNDEFINED')
E       OutputLine(symbol='no-name-in-module', lineno=77, column=0, end_lineno=77, end_column=39, object='', msg="No name 'bla' in module 'functional.n.no.no_self_argument'", confidence='UNDEFINED')

../BUILDROOT/usr/lib/python3.15/site-packages/pylint/testutils/lint_module_test.py:145: AssertionError
=========================== short test summary info ============================
FAILED tests/checkers/unittest_imports.py::TestImportsChecker::test_relative_beyond_top_level_two
FAILED tests/pyreverse/test_pyreverse_functional.py::test_class_diagrams[pep420]
FAILED tests/lint/unittest_lint.py::test_recursive_implicit_namespace_wrapper
FAILED tests/test_functional.py::test_functional[deprecated_methods_py36] - A...
FAILED tests/test_functional.py::test_functional[no_name_in_module] - Asserti...

https://docs.python.org/3.15/whatsnew/3.15.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.15/fedora-rawhide-x86_64/10144443-pylint/

For all our attempts to build pylint with Python 3.15, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/package/pylint/

Testing and mass rebuild of packages is happening in copr.
You can follow these instructions to test locally in mock if your package builds with Python 3.15:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/

Let us know here if you have any questions.

Python 3.15 is planned to be included in Fedora 45.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.15.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires),
so if this package is required a lot, it's important for us to get it fixed soon.

We'd appreciate help from the people who know this package best,
but if you don't want to work on this now, let us know so we can try to work around it on our side.