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fix: Python-3.12 compatibility (#4168)

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* fix: Python-3.12 compatibility

Enable dynamic attributes for `pybind11_static_property`

* Add future-notice comment
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Sergei Izmailov 2022-09-15 05:56:40 +09:00 committed by GitHub
parent 64f7281874
commit 8524b20c3c
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1 changed files with 10 additions and 0 deletions
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include/pybind11/detail/class.h
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@ -55,6 +55,9 @@ extern "C" inline int pybind11_static_set(PyObject *self, PyObject *obj, PyObjec
return PyProperty_Type.tp_descr_set(self, cls, value); return PyProperty_Type.tp_descr_set(self, cls, value);
} }
// Forward declaration to use in `make_static_property_type()`
inline void enable_dynamic_attributes(PyHeapTypeObject *heap_type);
/** A `static_property` is the same as a `property` but the `__get__()` and `__set__()` /** A `static_property` is the same as a `property` but the `__get__()` and `__set__()`
methods are modified to always use the object type instead of a concrete instance. methods are modified to always use the object type instead of a concrete instance.
Return value: New reference. */ Return value: New reference. */
@ -87,6 +90,13 @@ inline PyTypeObject *make_static_property_type() {
pybind11_fail("make_static_property_type(): failure in PyType_Ready()!"); pybind11_fail("make_static_property_type(): failure in PyType_Ready()!");
} }
# if PY_VERSION_HEX >= 0x030C0000
// PRE 3.12 FEATURE FREEZE. PLEASE REVIEW AFTER FREEZE.
// Since Python-3.12 property-derived types are required to
// have dynamic attributes (to set `__doc__`)
enable_dynamic_attributes(heap_type);
# endif
setattr((PyObject *) type, "__module__", str("pybind11_builtins")); setattr((PyObject *) type, "__module__", str("pybind11_builtins"));
PYBIND11_SET_OLDPY_QUALNAME(type, name_obj); PYBIND11_SET_OLDPY_QUALNAME(type, name_obj);