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gh-116436: Improve error message when TypeError occurs during dict update (#116443)

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Shantanu 2025-04-29 22:18:06 -07:00 • committed by GitHub
parent 4e294f6feb
commit 7e8b153fef
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3 changed files with 31 additions and 4 deletions
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9
Objects/dictobject.c
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@ -3730,13 +3730,14 @@ merge_from_seq2_lock_held(PyObject *d, PyObject *seq2, int override)
}
/* Convert item to sequence, and verify length 2. */
fast = PySequence_Fast(item, "");
fast = PySequence_Fast(item, "object is not iterable");
if (fast == NULL) {
if (PyErr_ExceptionMatches(PyExc_TypeError))
PyErr_Format(PyExc_TypeError,
"cannot convert dictionary update "
if (PyErr_ExceptionMatches(PyExc_TypeError)) {
_PyErr_FormatNote(
"Cannot convert dictionary update "
"sequence element #%zd to a sequence",
i);
}
goto Fail;
}
n = PySequence_Fast_GET_SIZE(fast);