8000 gh-103590: do not wrap a single exception raised from a try-except* by iritkatriel · Pull Request #103665 · python/cpython · GitHub
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gh-103590: do not wrap a single exception raised from a try-except* #103665

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Merged
merged 10 commits into from
Apr 27, 2023
Merged

gh-103590: do not wrap a single exception raised from a try-except* #103665

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17a1311
gh-103590: do not wrap a single exception raised from a try-except*
iritkatriel Apr 21, 2023
6504e9b
📜🤖 Added by blurb_it.
blurb-it[bot] Apr 21, 2023
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Merge branch 'main' into wrapping
iritkatriel Apr 22, 2023
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Merge branch 'main' into wrapping
ambv Apr 25, 2023
34bac84
Merge branch 'main' into wrapping
iritkatriel Apr 25, 2023
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add to whatsnew
iritkatriel Apr 26, 2023
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add issue ref to whatsnew
iritkatriel Apr 26, 2023
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whitespace
iritkatriel Apr 26, 2023
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Merge branch 'main' into wrapping
iritkatriel Apr 26, 2023
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iritkatriel Apr 26, 2023
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gh-103590: do not wrap a single exception raised from a try-except*
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@iritkatriel
iritkatriel committed Apr 21, 2023
commit 17a13111d4f7101239a9f706ae2e5f4fabb30143
44 changes: 20 additions & 24 deletions Lib/test/test_except_star.py
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Original file line number Diff line number Diff line change
Expand Up @@ -636,18 +636,17 @@ def test_raise_handle_all_raise_one_named(self):
raise orig
except* (TypeError, ValueError) as e:
raise SyntaxError(3)
except BaseException as e:
except SyntaxError as e:
exc = e

self.assertExceptionIsLike(
exc, ExceptionGroup("", [SyntaxError(3)]))
self.assertExceptionIsLike(exc, SyntaxError(3))

self.assertExceptionIsLike(
exc.exceptions[0].__context__,
exc.__context__,
ExceptionGroup("eg", [TypeError(1), ValueError(2)]))

self.assertMetadataNotEqual(orig, exc)
self.assertMetadataEqual(orig, exc.exceptions[0].__context__)
self.assertMetadataEqual(orig, exc.__context__)

def test_raise_handle_all_raise_one_unnamed(self):
orig = ExceptionGroup("eg", [TypeError(1), ValueError(2)])
Expand All @@ -656,18 +655,17 @@ def test_raise_handle_all_raise_one_unnamed(self):
raise orig
except* (TypeError, ValueError) as e:
raise SyntaxError(3)
except ExceptionGroup as e:
except SyntaxError as e:
exc = e

self.assertExceptionIsLike(
exc, ExceptionGroup("", [SyntaxError(3)]))
self.assertExceptionIsLike(exc, SyntaxError(3))

self.assertExceptionIsLike(
exc.exceptions[0].__context__,
exc.__context__,
ExceptionGroup("eg", [TypeError(1), ValueError(2)]))

self.assertMetadataNotEqual(orig, exc)
self.assertMetadataEqual(orig, exc.exceptions[0].__context__)
self.assertMetadataEqual(orig, exc.__context__)

def test_raise_handle_all_raise_two_named(self):
orig = ExceptionGroup("eg", [TypeError(1), ValueError(2)])
Expand Down Expand Up @@ -791,23 +789,22 @@ def test_raise_handle_all_raise_one_named(self):
raise orig
except* (TypeError, ValueError) as e:
raise SyntaxError(3) from e
except BaseException as e:
except SyntaxError as e:
exc = e

self.assertExceptionIsLike(
exc, ExceptionGroup("", [SyntaxError(3)]))
self.assertExceptionIsLike(exc, SyntaxError(3))

self.assertExceptionIsLike(
exc.exceptions[0].__context__,
exc.__context__,
ExceptionGroup("eg", [TypeError(1), ValueError(2)]))

self.assertExceptionIsLike(
exc.exceptions[0].__cause__,
exc.__cause__,
ExceptionGroup("eg", [TypeError(1), ValueError(2)]))

self.assertMetadataNotEqual(orig, exc)
self.assertMetadataEqual(orig, exc.exceptions[0].__context__)
self.assertMetadataEqual(orig, exc.exceptions[0].__cause__)
self.assertMetadataEqual(orig, exc.__context__)
self.assertMetadataEqual(orig, exc.__cause__)

def test_raise_handle_all_raise_one_unnamed(self):
orig = ExceptionGroup("eg", [TypeError(1), ValueError(2)])
Expand All @@ -817,23 +814,22 @@ def test_raise_handle_all_raise_one_unnamed(self):
except* (TypeError, ValueError) as e:
e = sys.exception()
raise SyntaxError(3) from e
except ExceptionGroup as e:
except SyntaxError as e:
exc = e

self.assertExceptionIsLike(
exc, ExceptionGroup("", [SyntaxError(3)]))
self.assertExceptionIsLike(exc, SyntaxError(3))

self.assertExceptionIsLike(
exc.exceptions[0].__context__,
exc.__context__,
ExceptionGroup("eg", [TypeError(1), ValueError(2)]))

self.assertExceptionIsLike(
exc.exceptions[0].__cause__,
exc.__cause__,
ExceptionGroup("eg", [TypeError(1), ValueError(2)]))

self.assertMetadataNotEqual(orig, exc)
self.assertMetadataEqual(orig, exc.exceptions[0].__context__)
self.assertMetadataEqual(orig, exc.exceptions[0].__cause__)
self.assertMetadataEqual(orig, exc.__context__)
self.assertMetadataEqual(orig, exc.__cause__)

def test_raise_handle_all_raise_two_named(self):
orig = ExceptionGroup("eg", [TypeError(1), ValueError(2)])
Expand Down
7 changes: 6 additions & 1 deletion Objects/exceptions.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1421,7 +1421,12 @@ _PyExc_PrepReraiseStar(PyObject *orig, PyObject *excs)
if (res < 0) {
goto done;
}
result = _PyExc_CreateExceptionGroup("", raised_list);
if (PyList_GET_SIZE(raised_list) > 1) {
result = _PyExc_CreateExceptionGroup("", raised_list);
}
else {
result = Py_NewRef(PyList_GetItem(raised_list, 0));
}
if (result == NULL) {
goto done;
}
Expand Down
0