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gh-106033: Get rid of new occurrences of PyDict_GetItem and PyObject_HasAttr #106034

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Merged
serhiy-storchaka merged 2 commits into from
Jun 23, 2023
Merged

gh-106033: Get rid of new occurrences of PyDict_GetItem and PyObject_HasAttr #106034

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c593435
gh-106033: Get rid of new occurrences of PyDict_GetItem and PyObject_…
serhiy-storchaka Jun 23, 2023
4ae982e
Address review comments.
serhiy-storchaka Jun 23, 2023
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13 changes: 7 additions & 6 deletions 13 Modules/_hashopenssl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -383,14 +383,15 @@ py_digest_by_digestmod(PyObject *module, PyObject *digestmod, enum Py_hash_type
} else {
_hashlibstate *state = get_hashlib_state(module);
// borrowed ref
name_obj = PyDict_GetItem(state->constructs, digestmod);
name_obj = PyDict_GetItemWithError(state->constructs, digestmod);
}
if (name_obj == NULL) {
_hashlibstate *state = get_hashlib_state(module);
PyErr_Clear();
PyErr_Format(
state->unsupported_digestmod_error,
"Unsupported digestmod %R", digestmod);
if (!PyErr_Occurred()) {
_hashlibstate *state = get_hashlib_state(module);
PyErr_Format(
state->unsupported_digestmod_error,
"Unsupported digestmod %R", digestmod);
}
return NULL;
}

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2 changes: 1 addition & 1 deletion 2 Modules/_testcapi/code.c
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ get_code_extra_index(PyInterpreterState* interp) {
PyObject *interp_dict = PyInterpreterState_GetDict(interp); // borrowed
assert(interp_dict); // real users would handle missing dict... somehow

PyObject *index_obj = PyDict_GetItemString(interp_dict, key); // borrowed
PyObject *index_obj = _PyDict_GetItemStringWithError(interp_dict, key); // borrowed
Py_ssize_t index = 0;
if (!index_obj) {
if (PyErr_Occurred()) {
Expand Down
31 changes: 15 additions & 16 deletions 31 Objects/exceptions.c
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Original file line number Diff line number Diff line change
Expand Up @@ -207,22 +207,21 @@ BaseException_add_note(PyObject *self, PyObject *note)
return NULL;
}

if (!PyObject_HasAttr(self, &_Py_ID(__notes__))) {
PyObject *new_notes = PyList_New(0);
if (new_notes == NULL) {
PyObject *notes;
if (_PyObject_LookupAttr(self, &_Py_ID(__notes__), &notes) < 0) {
return NULL;
}
if (notes == NULL) {
notes = PyList_New(0);
if (notes == NULL) {
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return NULL;
}
if (PyObject_SetAttr(self, &_Py_ID(__notes__), new_notes) < 0) {
Py_DECREF(new_notes);
if (PyObject_SetAttr(self, &_Py_ID(__notes__), notes) < 0) {
Py_DECREF(notes);
return NULL;
}
Py_DECREF(new_notes);
}
PyObject *notes = PyObject_GetAttr(self, &_Py_ID(__notes__));
if (notes == NULL) {
return NULL;
}
if (!PyList_Check(notes)) {
else if (!PyList_Check(notes)) {
Py_DECREF(notes);
PyErr_SetString(PyExc_TypeError, "Cannot add note: __notes__ is not a list");
return NULL;
Expand Down Expand Up @@ -941,11 +940,11 @@ exceptiongroup_subset(
PyException_SetContext(eg, PyException_GetContext(orig));
PyException_SetCause(eg, PyException_GetCause(orig));

if (PyObject_HasAttr(orig, &_Py_ID(__notes__))) {
PyObject *notes = PyObject_GetAttr(orig, &_Py_ID(__notes__));
if (notes == NULL) {
goto error;
}
PyObject *notes;
if (_PyObject_LookupAttr(orig, &_Py_ID(__notes__), &notes) < 0) {
goto error;
}
if (notes) {
if (PySequence_Check(notes)) {
/* Make a copy so the parts have independent notes lists. */
PyObject *notes_copy = PySequence_List(notes);
Expand Down
5 changes: 4 additions & 1 deletion 5 Objects/typeobject.c
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Expand Up @@ -1508,11 +1508,14 @@ type_set_annotations(PyTypeObject *type, PyObject *value, void *context)
static PyObject *
type_get_type_params(PyTypeObject *type, void *context)
{
PyObject *params = PyDict_GetItem(lookup_tp_dict(type), &_Py_ID(__type_params__));
PyObject *params = PyDict_GetItemWithError(lookup_tp_dict(type), &_Py_ID(__type_params__));

if (params) {
return Py_NewRef(params);
}
if (PyErr_Occurred()) {
return NULL;
}

return PyTuple_New(0);
}
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12 changes: 5 additions & 7 deletions 12 Python/pythonrun.c
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Expand Up @@ -1134,15 +1134,13 @@ print_exception_notes(struct exception_print_context *ctx, PyObject *value)
return 0;
}

if (!PyObject_HasAttr(value, &_Py_ID(__notes__))) {
return 0;
}
PyObject *notes = PyObject_GetAttr(value, &_Py_ID(__notes__));
if (notes == NULL) {
return -1;
PyObject *notes;
int res = _PyObject_LookupAttr(value, &_Py_ID(__notes__), &notes);
if (res <= 0) {
return res;
}
if (!PySequence_Check(notes) || PyUnicode_Check(notes) || PyBytes_Check(notes)) {
int res = 0;
res = 0;
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@iritkatriel iritkatriel Jun 23, 2023

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is there a reason not to have this local to the block?

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@serhiy-storchaka serhiy-storchaka Jun 23, 2023

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It will hide the same named variable in the outer block. It looks errorprone, even if it does not do wrong in this case. The compiler can complain, and I would not blame it on this.

if (write_indented_margin(ctx, f) < 0) {
res = -1;
}
Expand Down
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