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From 9be2b65dbd8366da27cd79c09195493217dbf539 Mon Sep 17 00:00:00 2001
From: Tom Hunze <dev@thunze.de>
Date: Sat, 7 Feb 2026 11:37:49 +0100
Subject: [PATCH] Fix `ExceptionGroup` repr changing when original exception
sequence is mutated
https://github.com/python/cpython/pull/141736
---
src/exceptiongroup/_exceptions.py | 3 ++-
tests/test_exceptions.py | 3 +--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/exceptiongroup/_exceptions.py b/src/exceptiongroup/_exceptions.py
index f42c1ad..996d8e1 100644
--- a/src/exceptiongroup/_exceptions.py
+++ b/src/exceptiongroup/_exceptions.py
@@ -101,6 +101,7 @@ class BaseExceptionGroup(BaseException, Generic[_BaseExceptionT_co]):
)
instance = super().__new__(cls, __message, __exceptions)
+ instance._exceptions_str = repr(__exceptions)
instance._exceptions = tuple(__exceptions)
return instance
@@ -275,7 +276,7 @@ class BaseExceptionGroup(BaseException, Generic[_BaseExceptionT_co]):
return f"{self.message} ({len(self._exceptions)} sub-exception{suffix})"
def __repr__(self) -> str:
- return f"{self.__class__.__name__}({self.args[0]!r}, {self.args[1]!r})"
+ return f"{self.__class__.__name__}({self.args[0]!r}, {self._exceptions_str})"
class ExceptionGroup(BaseExceptionGroup[_ExceptionT_co], Exception):
diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
index e2bc81a..a253236 100644
--- a/tests/test_exceptions.py
+++ b/tests/test_exceptions.py
@@ -883,6 +883,5 @@ def test_exceptions_mutate_original_sequence():
exceptions.append(KeyError("bar"))
assert excgrp.exceptions is exc_tuple
assert repr(excgrp) == (
- "BaseExceptionGroup('foo', [ValueError(1), KeyboardInterrupt(), "
- "KeyError('bar')])"
+ "BaseExceptionGroup('foo', [ValueError(1), KeyboardInterrupt()])"
)
--
2.51.2
|
