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bpo-43413: Fix handling keyword arguments in subclasses of some buitin classes (GH-26456)

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* Constructors of subclasses of some buitin classes (e.g. tuple, list,
  frozenset) no longer accept arbitrary keyword arguments.
* Subclass of set can now define a __new__() method with additional
  keyword parameters without overriding also __init__().
This commit is contained in:
Serhiy Storchaka 2021-09-12 13:27:50 +03:00 • committed by GitHub
parent 5277ffe12d
commit 92bf8691fb
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26 changed files with 285 additions and 67 deletions
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6
Python/bltinmodule.c
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@ -507,7 +507,8 @@ filter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
PyObject *it;
filterobject *lz;
if (type == &PyFilter_Type && !_PyArg_NoKeywords("filter", kwds))
if ((type == &PyFilter_Type || type->tp_init == PyFilter_Type.tp_init) &&
!_PyArg_NoKeywords("filter", kwds))
return NULL;
if (!PyArg_UnpackTuple(args, "filter", 2, 2, &func, &seq))
@ -1218,7 +1219,8 @@ map_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
mapobject *lz;
Py_ssize_t numargs, i;
if (type == &PyMap_Type && !_PyArg_NoKeywords("map", kwds))
if ((type == &PyMap_Type || type->tp_init == PyMap_Type.tp_init) &&
!_PyArg_NoKeywords("map", kwds))
return NULL;
numargs = PyTuple_Size(args);