PyCell_[G,S]et does not document that they set an exception

[sobolevn]

cpython/Doc/c-api/cell.rst

Lines 51 to 56 in 9ba2a46

	.. c:function:: int PyCell_Set(PyObject *cell, PyObject *value)
	Set the contents of the cell object *cell* to *value*. This releases the
	reference to any current content of the cell. *value* may be ``NULL``. *cell*
	must be non-``NULL``; if it is not a cell object, ``-1`` will be returned. On
	success, ``0`` will be returned.

We should add "returns -1 with an exception set".

Linked PRs

• gh-121533: Improve PyCell_[Get,Set] docs: mention the exceptions #121534
• [3.13] gh-121533: Improve PyCell_[Get,Set] docs: mention the exceptions (GH-121534) #121539
• [3.12] gh-121533: Improve PyCell_[Get,Set] docs: mention the exceptions (GH-121534) #121540

[sobolevn]

the same is for PyCell_Get: they both call PyErr_BadInternalCall():

cpython/Objects/cellobject.c

Lines 66 to 69 in 9ba2a46

	if (!PyCell_Check(op)) {
	PyErr_BadInternalCall();
	return -1;
	}