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-rw-r--r--Lib/test/test_sys.py26
-rw-r--r--Lib/test/test_traceback.py32
-rw-r--r--Lib/traceback.py2
-rw-r--r--Misc/NEWS.d/next/Core and Builtins/2021-09-03-12-35-17.bpo-41031.yPSJEs.rst1
-rw-r--r--Python/errors.c4
-rw-r--r--Python/pythonrun.c4
6 files changed, 55 insertions, 14 deletions
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 12305ca..e98803b 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -1071,19 +1071,29 @@ class UnraisableHookTest(unittest.TestCase):
self.assertTrue(report.endswith("\n"))
def test_original_unraisablehook_exception_qualname(self):
+ # See bpo-41031, bpo-45083.
+ # Check that the exception is printed with its qualified name
+ # rather than just classname, and the module names appears
+ # unless it is one of the hard-coded exclusions.
class A:
class B:
class X(Exception):
pass
- with test.support.captured_stderr() as stderr, \
- test.support.swap_attr(sys, 'unraisablehook',
- sys.__unraisablehook__):
- expected = self.write_unraisable_exc(
- A.B.X(), "msg", "obj");
- report = stderr.getvalue()
- testName = 'test_original_unraisablehook_exception_qualname'
- self.assertIn(f"{testName}.<locals>.A.B.X", report)
+ for moduleName in 'builtins', '__main__', 'some_module':
+ with self.subTest(moduleName=moduleName):
+ A.B.X.__module__ = moduleName
+ with test.support.captured_stderr() as stderr, \
+ test.support.swap_attr(sys, 'unraisablehook',
+ sys.__unraisablehook__):
+ expected = self.write_unraisable_exc(
+ A.B.X(), "msg", "obj");
+ report = stderr.getvalue()
+ self.assertIn(A.B.X.__qualname__, report)
+ if moduleName in ['builtins', '__main__']:
+ self.assertNotIn(moduleName + '.', report)
+ else:
+ self.assertIn(moduleName + '.', report)
def test_original_unraisablehook_wrong_type(self):
exc = ValueError(42)
diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index 949adef..363165d 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -172,7 +172,7 @@ class TracebackCases(unittest.TestCase):
1/0
err = traceback.format_exception_only(X, X())
self.assertEqual(len(err), 1)
- str_value = '<unprintable %s object>' % X.__name__
+ str_value = '<exception str() failed>'
if X.__module__ in ('__main__', 'builtins'):
str_name = X.__qualname__
else:
@@ -1171,19 +1171,45 @@ class BaseExceptionReportingTests:
exp = "\n".join(expected)
self.assertEqual(exp, err)
- def test_format_exception_only_qualname(self):
+ def test_exception_qualname(self):
class A:
class B:
class X(Exception):
def __str__(self):
return "I am X"
- pass
+
err = self.get_report(A.B.X())
str_value = 'I am X'
str_name = '.'.join([A.B.X.__module__, A.B.X.__qualname__])
exp = "%s: %s\n" % (str_name, str_value)
self.assertEqual(exp, err)
+ def test_exception_modulename(self):
+ class X(Exception):
+ def __str__(self):
+ return "I am X"
+
+ for modulename in '__main__', 'builtins', 'some_module':
+ X.__module__ = modulename
+ with self.subTest(modulename=modulename):
+ err = self.get_report(X())
+ str_value = 'I am X'
+ if modulename in ['builtins', '__main__']:
+ str_name = X.__qualname__
+ else:
+ str_name = '.'.join([X.__module__, X.__qualname__])
+ exp = "%s: %s\n" % (str_name, str_value)
+ self.assertEqual(exp, err)
+
+ def test_exception_bad__str__(self):
+ class X(Exception):
+ def __str__(self):
+ 1/0
+ err = self.get_report(X())
+ str_value = '<exception str() failed>'
+ str_name = '.'.join([X.__module__, X.__qualname__])
+ self.assertEqual(err, f"{str_name}: {str_value}\n")
+
class PyExcReportingTests(BaseExceptionReportingTests, unittest.TestCase):
#
diff --git a/Lib/traceback.py b/Lib/traceback.py
index d51c201..1b537dc 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -169,7 +169,7 @@ def _some_str(value):
try:
return str(value)
except:
- return '<unprintable %s object>' % type(value).__name__
+ return '<exception str() failed>'
# --
diff --git a/Misc/NEWS.d/next/Core and Builtins/2021-09-03-12-35-17.bpo-41031.yPSJEs.rst b/Misc/NEWS.d/next/Core and Builtins/2021-09-03-12-35-17.bpo-41031.yPSJEs.rst
new file mode 100644
index 0000000..5dcfaa0
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2021-09-03-12-35-17.bpo-41031.yPSJEs.rst
@@ -0,0 +1 @@
+Match C and Python code formatting of unprintable exceptions and exceptions in the :mod:`__main__` module. \ No newline at end of file
diff --git a/Python/errors.c b/Python/errors.c
index 15ca21b..b2030f7 100644
--- a/Python/errors.c
+++ b/Python/errors.c
@@ -25,6 +25,7 @@ extern char *strerror(int);
extern "C" {
#endif
+_Py_IDENTIFIER(__main__);
_Py_IDENTIFIER(__module__);
_Py_IDENTIFIER(builtins);
_Py_IDENTIFIER(stderr);
@@ -1297,7 +1298,8 @@ write_unraisable_exc_file(PyThreadState *tstate, PyObject *exc_type,
}
}
else {
- if (!_PyUnicode_EqualToASCIIId(modulename, &PyId_builtins)) {
+ if (!_PyUnicode_EqualToASCIIId(modulename, &PyId_builtins) &&
+ !_PyUnicode_EqualToASCIIId(modulename, &PyId___main__)) {
if (PyFile_WriteObject(modulename, file, Py_PRINT_RAW) < 0) {
Py_DECREF(modulename);
return -1;
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 3d07f43..0e0262c 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -35,6 +35,7 @@
#endif
+_Py_IDENTIFIER(__main__);
_Py_IDENTIFIER(builtins);
_Py_IDENTIFIER(excepthook);
_Py_IDENTIFIER(flush);
@@ -974,7 +975,8 @@ print_exception(PyObject *f, PyObject *value)
err = PyFile_WriteString("<unknown>", f);
}
else {
- if (!_PyUnicode_EqualToASCIIId(modulename, &PyId_builtins))
+ if (!_PyUnicode_EqualToASCIIId(modulename, &PyId_builtins) &&
+ !_PyUnicode_EqualToASCIIId(modulename, &PyId___main__))
{
err = PyFile_WriteObject(modulename, f, Py_PRINT_RAW);
err += PyFile_WriteString(".", f);