python-rdflib fails to build with Python 3.13.0b1.


__________________ TestUtil.test_to_bits_from_bits_round_trip __________________

self = <test_nodepickler.TestUtil object at 0x7f5277295810>

        def test_to_bits_from_bits_round_trip(self):
            np = NodePickler()
    
            a = Literal(
                """A test with a \\n (backslash n), "\u00a9" , and newline \n and a second line.
    """
            )
>           b = np.loads(np.dumps(a))

test/test_store/test_nodepickler.py:32: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <rdflib.store.NodePickler object at 0x7f52751b1fd0>
obj = rdflib.term.Literal('A test with a \\n (backslash n), "©" , and newline \n and a second line.\n')
protocol = None, bin = None

    def dumps(
        self, obj: "Node", protocol: Optional[Any] = None, bin: Optional[Any] = None
    ):
        src = BytesIO()
        p = Pickler(src)
        # NOTE on type error: https://github.com/python/mypy/issues/2427
        # type error: Cannot assign to a method
>       p.persistent_id = self._get_ids  # type: ignore[assignment]
E       AttributeError: '_pickle.Pickler' object attribute 'persistent_id' is read-only

rdflib/store.py:149: AttributeError
_________________________ TestUtil.test_literal_cases __________________________

self = <test_nodepickler.TestUtil object at 0x7f5277295950>

    def test_literal_cases(self):
        np = NodePickler()
    
        for l in cases:
            a = Literal(l)
>           b = np.loads(np.dumps(a))

test/test_store/test_nodepickler.py:40: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <rdflib.store.NodePickler object at 0x7f5273890a50>
obj = rdflib.term.Literal('no quotes'), protocol = None, bin = None

    def dumps(
        self, obj: "Node", protocol: Optional[Any] = None, bin: Optional[Any] = None
    ):
        src = BytesIO()
        p = Pickler(src)
        # NOTE on type error: https://github.com/python/mypy/issues/2427
        # type error: Cannot assign to a method
>       p.persistent_id = self._get_ids  # type: ignore[assignment]
E       AttributeError: '_pickle.Pickler' object attribute 'persistent_id' is read-only

FAILED test/test_store/test_nodepickler.py::TestUtil::test_to_bits_from_bits_round_trip
FAILED test/test_store/test_nodepickler.py::TestUtil::test_literal_cases - At...

https://docs.python.org/3.13/whatsnew/3.13.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.13/fedora-rawhide-x86_64/07495797-python-rdflib/

For all our attempts to build python-rdflib with Python 3.13, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.13/package/python-rdflib/

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 3.13:
https://copr.fedorainfracloud.org/coprs/g/python/python3.13/

Let us know here if you have any questions.

Python 3.13 is planned to be included in Fedora 41.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.13.
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.