Le mar. 7 juil. 2020 à 17:21, Inada Naoki <songofaca...@gmail.com> a écrit : > This PEP proposes to remove deprecated ``Py_UNICODE`` encoder APIs in > Python 3.11:
Overall, I like the plan. IMHO 3.11 is a reasonable target version, since on the top 4000 projects, only 2 are affected and it is easy to fix them. > Python 3.9 > ---------- > > Add ``Py_DEPRECATED(3.3)`` to following APIs. This change is committed > already [3]_. All other APIs have been marked ``Py_DEPRECATED(3.3)`` > already. > > * ``PyUnicode_EncodeDecimal()`` > * ``PyUnicode_TransformDecimalToASCII()``. > > Document all APIs as "will be removed in version 3.11". I guess that if the release manager is not ok to add the two remaining Py_DEPRECATED() warnings, they can be added to 3.10 instead. > Make some private APIs public > > ``PyUnicode_EncodeUTF7()`` doesn't have public alternative APIs. > > Some APIs have alternative public APIs. But they are missing > ``const char *errors`` or ``int byteorder`` parameters. If needed, new functions can be added independently of this PEP. > Using runtime warning > --------------------- > > These APIs doesn't release GIL for now. Emitting a warning from > such APIs is not safe. See this example. > > .. code-block:: > > PyObject *u = PyList_GET_ITEM(list, i); // u is borrowed reference. > PyObject *b = PyUnicode_EncodeUTF8(PyUnicode_AS_UNICODE(u), > PyUnicode_GET_SIZE(u), NULL); > // Assumes u is still living reference. > PyObject *t = PyTuple_Pack(2, u, b); > Py_DECREF(b); > return t; > > If we emit Python warning from ``PyUnicode_EncodeUTF8()``, warning > filters and other threads may change the ``list`` and ``u`` can be > a dangling reference after ``PyUnicode_EncodeUTF8()`` returned. > > Additionally, since we are not changing behavior but removing C APIs, > runtime ``DeprecationWarning`` might not helpful for Python > developers. We should warn to extension developers instead. DeprecationWarning is hidden by default: users would not be impacted. I don't think that encoding functions are special enough to skip these warnings. I think that it's reasonable to change the behavior on these deprecated functions to emit a warning. Victor -- Night gathers, and now my watch begins. It shall not end until my death. _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/M523JOR2B36QYIWO4LMS4QPUDFF23E3T/ Code of Conduct: http://python.org/psf/codeofconduct/
