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From 074fc742a699278ea5266b34aace1e34049b3de3 Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@canonical.com>
Date: Sat, 23 Apr 2022 22:29:07 +0100
Subject: [PATCH] Implement twisted.python.failure._Code.co_positions
This is needed for compatibility with Python 3.11.
---
src/twisted/newsfragments/10336.bugfix | 1 +
src/twisted/python/failure.py | 5 ++++-
src/twisted/test/test_failure.py | 1 +
3 files changed, 6 insertions(+), 1 deletion(-)
create mode 100644 src/twisted/newsfragments/10336.bugfix
diff --git a/src/twisted/newsfragments/10336.bugfix b/src/twisted/newsfragments/10336.bugfix
new file mode 100644
index 00000000000..a7ffab3627d
--- /dev/null
+++ b/src/twisted/newsfragments/10336.bugfix
@@ -0,0 +1 @@
+Implement twisted.python.failure._Code.co_positions for compatibility with Python 3.11.
diff --git a/src/twisted/python/failure.py b/src/twisted/python/failure.py
index 6471e7bca59..c5a359e405b 100644
--- a/src/twisted/python/failure.py
+++ b/src/twisted/python/failure.py
@@ -130,7 +130,7 @@ def _Traceback(stackFrames, tbFrames):
# The set of attributes for _TracebackFrame, _Frame and _Code were taken from
-# https://docs.python.org/3.10/library/inspect.html Other Pythons may have a
+# https://docs.python.org/3.11/library/inspect.html Other Pythons may have a
# few more attributes that should be added if needed.
class _TracebackFrame:
"""
@@ -202,6 +202,9 @@ def __init__(self, name, filename):
self.co_nlocals = 0
self.co_stacksize = 0
+ def co_positions(self):
+ return ((None, None, None, None),)
+
_inlineCallbacksExtraneous = []
diff --git a/src/twisted/test/test_failure.py b/src/twisted/test/test_failure.py
index 6dd7c682bf9..6fd82c868ec 100644
--- a/src/twisted/test/test_failure.py
+++ b/src/twisted/test/test_failure.py
@@ -825,6 +825,7 @@ def test_fakeCodeAttributes(self):
self.assertIsInstance(code.co_nlocals, int)
self.assertIsInstance(code.co_stacksize, int)
self.assertIsInstance(code.co_varnames, list)
+ self.assertIsInstance(code.co_positions(), tuple)
def test_fakeTracebackFrame(self):
"""
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