https://github.com/python/cpython/commit/5b6aa6ce20b5b3b45dec2ebd6355e248cdf... commit: 5b6aa6ce20b5b3b45dec2ebd6355e248cdf2fbcc branch: 3.9 author: Irit Katriel <1055913+iritkatriel@users.noreply.github.com> committer: iritkatriel <1055913+iritkatriel@users.noreply.github.com> date: 2021-11-29T10:11:48Z summary: bpo-45614: Fix traceback display for exceptions with invalid module name (GH-29726) (GH-29827) (cherry picked from commit 4dfae6f38e1720ddafcdd68043e476ecb41cb4d5) files: A Misc/NEWS.d/next/Core and Builtins/2021-11-23-12-06-41.bpo-45614.fIekgI.rst M Lib/test/test_traceback.py M Lib/traceback.py M Python/pythonrun.c diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py index 8d9d514d8deaa..c0b3388b2d363 100644 --- a/Lib/test/test_traceback.py +++ b/Lib/test/test_traceback.py @@ -740,6 +740,17 @@ def test_message_none(self): err = self.get_report(Exception('')) self.assertIn('Exception\n', err) + def test_exception_modulename_not_unicode(self): + class X(Exception): + def __str__(self): + return "I am X" + + X.__module__ = 42 + + err = self.get_report(X()) + exp = f'<unknown>.{X.__qualname__}: I am X\n' + self.assertEqual(exp, err) + def test_syntax_error_various_offsets(self): for offset in range(-5, 10): for add in [0, 2]: diff --git a/Lib/traceback.py b/Lib/traceback.py index d65a6098cc621..c771a137cd9e8 100644 --- a/Lib/traceback.py +++ b/Lib/traceback.py @@ -574,6 +574,8 @@ def format_exception_only(self): stype = self.exc_type.__qualname__ smod = self.exc_type.__module__ if smod not in ("__main__", "builtins"): + if not isinstance(smod, str): + smod = "<unknown>" stype = smod + '.' + stype if not issubclass(self.exc_type, SyntaxError): diff --git a/Misc/NEWS.d/next/Core and Builtins/2021-11-23-12-06-41.bpo-45614.fIekgI.rst b/Misc/NEWS.d/next/Core and Builtins/2021-11-23-12-06-41.bpo-45614.fIekgI.rst new file mode 100644 index 0000000000000..4255e1885ad67 --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2021-11-23-12-06-41.bpo-45614.fIekgI.rst @@ -0,0 +1 @@ +Fix :mod:`traceback` display for exceptions with invalid module name. \ No newline at end of file diff --git a/Python/pythonrun.c b/Python/pythonrun.c index 50c59b69f31fc..364101e99de2d 100644 --- a/Python/pythonrun.c +++ b/Python/pythonrun.c @@ -903,7 +903,7 @@ print_exception(PyObject *f, PyObject *value) { Py_XDECREF(modulename); PyErr_Clear(); - err = PyFile_WriteString("<unknown>", f); + err = PyFile_WriteString("<unknown>.", f); } else { if (!_PyUnicode_EqualToASCIIId(modulename, &PyId_builtins))