[Python-checkins] bpo-45083: Include the exception class qualname when formatting an exception (GH-28119)
ambv
webhook-mailer at python.org
Fri Sep 3 03:30:48 EDT 2021
https://github.com/python/cpython/commit/b4b6342848ec0459182a992151099252434cc619
commit: b4b6342848ec0459182a992151099252434cc619
branch: main
author: Irit Katriel <1055913+iritkatriel at users.noreply.github.com>
committer: ambv <lukasz at langa.pl>
date: 2021-09-03T09:30:17+02:00
summary:
bpo-45083: Include the exception class qualname when formatting an exception (GH-28119)
Co-authored-by: Erlend Egeberg Aasland <erlend.aasland at innova.no>
files:
A Misc/NEWS.d/next/Core and Builtins/2021-09-01-23-55-49.bpo-45083.cLi9G3.rst
M Lib/test/test_sys.py
M Lib/test/test_traceback.py
M Python/errors.c
M Python/pythonrun.c
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index dba4928ec261ac..12305ca95d0a0d 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -1070,6 +1070,20 @@ def __del__(self):
self.assertIn("del is broken", report)
self.assertTrue(report.endswith("\n"))
+ def test_original_unraisablehook_exception_qualname(self):
+ 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)
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 d1967aabb29a1c..ee2896c5f4867c 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -1171,6 +1171,19 @@ def test_syntax_error_various_offsets(self):
exp = "\n".join(expected)
self.assertEqual(exp, err)
+ def test_format_exception_only_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)
+
class PyExcReportingTests(BaseExceptionReportingTests, unittest.TestCase):
#
diff --git a/Misc/NEWS.d/next/Core and Builtins/2021-09-01-23-55-49.bpo-45083.cLi9G3.rst b/Misc/NEWS.d/next/Core and Builtins/2021-09-01-23-55-49.bpo-45083.cLi9G3.rst
new file mode 100644
index 00000000000000..7bfd87b9420593
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2021-09-01-23-55-49.bpo-45083.cLi9G3.rst
@@ -0,0 +1,3 @@
+When the interpreter renders an exception, its name now has a complete qualname. Previously only the class name was concatenated to the module name, which sometimes resulted in an incorrect full name being displayed.
+
+(This issue impacted only the C code exception rendering, the :mod:`traceback` module was using qualname already).
\ No newline at end of file
diff --git a/Python/errors.c b/Python/errors.c
index ae1cde690eafa5..15ca21b68400f2 100644
--- a/Python/errors.c
+++ b/Python/errors.c
@@ -1287,46 +1287,45 @@ write_unraisable_exc_file(PyThreadState *tstate, PyObject *exc_type,
}
assert(PyExceptionClass_Check(exc_type));
- const char *className = PyExceptionClass_Name(exc_type);
- if (className != NULL) {
- const char *dot = strrchr(className, '.');
- if (dot != NULL) {
- className = dot+1;
- }
- }
- PyObject *moduleName = _PyObject_GetAttrId(exc_type, &PyId___module__);
- if (moduleName == NULL || !PyUnicode_Check(moduleName)) {
- Py_XDECREF(moduleName);
+ PyObject *modulename = _PyObject_GetAttrId(exc_type, &PyId___module__);
+ if (modulename == NULL || !PyUnicode_Check(modulename)) {
+ Py_XDECREF(modulename);
_PyErr_Clear(tstate);
if (PyFile_WriteString("<unknown>", file) < 0) {
return -1;
}
}
else {
- if (!_PyUnicode_EqualToASCIIId(moduleName, &PyId_builtins)) {
- if (PyFile_WriteObject(moduleName, file, Py_PRINT_RAW) < 0) {
- Py_DECREF(moduleName);
+ if (!_PyUnicode_EqualToASCIIId(modulename, &PyId_builtins)) {
+ if (PyFile_WriteObject(modulename, file, Py_PRINT_RAW) < 0) {
+ Py_DECREF(modulename);
return -1;
}
- Py_DECREF(moduleName);
+ Py_DECREF(modulename);
if (PyFile_WriteString(".", file) < 0) {
return -1;
}
}
else {
- Py_DECREF(moduleName);
+ Py_DECREF(modulename);
}
}
- if (className == NULL) {
+
+ PyObject *qualname = PyType_GetQualName((PyTypeObject *)exc_type);
+ if (qualname == NULL || !PyUnicode_Check(qualname)) {
+ Py_XDECREF(qualname);
+ _PyErr_Clear(tstate);
if (PyFile_WriteString("<unknown>", file) < 0) {
return -1;
}
}
else {
- if (PyFile_WriteString(className, file) < 0) {
+ if (PyFile_WriteObject(qualname, file, Py_PRINT_RAW) < 0) {
+ Py_DECREF(qualname);
return -1;
}
+ Py_DECREF(qualname);
}
if (exc_value && exc_value != Py_None) {
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index f00e3eb0de803f..3d07f43b5256d1 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -961,36 +961,37 @@ print_exception(PyObject *f, PyObject *value)
/* Don't do anything else */
}
else {
- PyObject* moduleName;
- const char *className;
+ PyObject* modulename;
+
_Py_IDENTIFIER(__module__);
assert(PyExceptionClass_Check(type));
- className = PyExceptionClass_Name(type);
- if (className != NULL) {
- const char *dot = strrchr(className, '.');
- if (dot != NULL)
- className = dot+1;
- }
- moduleName = _PyObject_GetAttrId(type, &PyId___module__);
- if (moduleName == NULL || !PyUnicode_Check(moduleName))
+ modulename = _PyObject_GetAttrId(type, &PyId___module__);
+ if (modulename == NULL || !PyUnicode_Check(modulename))
{
- Py_XDECREF(moduleName);
+ Py_XDECREF(modulename);
+ PyErr_Clear();
err = PyFile_WriteString("<unknown>", f);
}
else {
- if (!_PyUnicode_EqualToASCIIId(moduleName, &PyId_builtins))
+ if (!_PyUnicode_EqualToASCIIId(modulename, &PyId_builtins))
{
- err = PyFile_WriteObject(moduleName, f, Py_PRINT_RAW);
+ err = PyFile_WriteObject(modulename, f, Py_PRINT_RAW);
err += PyFile_WriteString(".", f);
}
- Py_DECREF(moduleName);
+ Py_DECREF(modulename);
}
if (err == 0) {
- if (className == NULL)
- err = PyFile_WriteString("<unknown>", f);
- else
- err = PyFile_WriteString(className, f);
+ PyObject* qualname = PyType_GetQualName((PyTypeObject *)type);
+ if (qualname == NULL || !PyUnicode_Check(qualname)) {
+ Py_XDECREF(qualname);
+ PyErr_Clear();
+ err = PyFile_WriteString("<unknown>", f);
+ }
+ else {
+ err = PyFile_WriteObject(qualname, f, Py_PRINT_RAW);
+ Py_DECREF(qualname);
+ }
}
}
if (err == 0 && (value != Py_None)) {
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