https://github.com/python/cpython/commit/693926a62c30c05d114a57eccbbc72c1ba6a7e62
commit: 693926a62c30c05d114a57eccbbc72c1ba6a7e62
branch: main
author: Peter Bierma <[email protected]>
committer: ZeroIntensity <[email protected]>
date: 2026-11-04T20:38:33-05:00
summary:
gh-161295: Add a `__repr__` to `reprlib.Repr` (GH-161296)
files:
A Misc/NEWS.d/next/Library/2026-11-03-21-26-09.gh-issue-161295.IJqoJM.rst
M Doc/library/reprlib.rst
M Lib/reprlib.py
M Lib/test/test_reprlib.py
diff --git a/Doc/library/reprlib.rst b/Doc/library/reprlib.rst
index d269d8bbaa55da..75d0df481c79b4 100644
--- a/Doc/library/reprlib.rst
+++ b/Doc/library/reprlib.rst
@@ -40,6 +40,10 @@ This module provides a class, an instance, and a function:
.. versionchanged:: 3.12
Allow attributes to be set via keyword arguments.
+ .. versionchanged:: next
+ :class:`!Repr` instances now have a string representation that includes
+ their attribute values.
+
.. data:: aRepr
diff --git a/Lib/reprlib.py b/Lib/reprlib.py
index ab18247682b69a..8e3dff2f1ba345 100644
--- a/Lib/reprlib.py
+++ b/Lib/reprlib.py
@@ -67,6 +67,10 @@ def __init__(
self.fillvalue = fillvalue
self.indent = indent
+ def __repr__(self):
+ args = ', '.join(f'{key}={value!r}' for key, value in
self.__dict__.items())
+ return f'{type(self).__name__}({args})'
+
def repr(self, x):
return self.repr1(x, self.maxlevel)
diff --git a/Lib/test/test_reprlib.py b/Lib/test/test_reprlib.py
index 5a95a05c6496a2..ecfd199fde4531 100644
--- a/Lib/test/test_reprlib.py
+++ b/Lib/test/test_reprlib.py
@@ -27,6 +27,14 @@ def nestedTuple(nesting):
class ReprTests(unittest.TestCase):
+ def test_repr(self):
+ self.assertEqual(
+ repr(Repr(maxlevel=3, fillvalue='***', indent='\t')),
+ "Repr(maxlevel=3, maxtuple=6, maxlist=6, maxarray=5, maxdict=4, "
+ "maxset=6, maxfrozenset=6, maxdeque=6, maxstring=30, maxlong=40, "
+ "maxother=30, fillvalue='***', indent='\\t')",
+ )
+
def test_init_kwargs(self):
example_kwargs = {
"maxlevel": 101,
diff --git
a/Misc/NEWS.d/next/Library/2026-11-03-21-26-09.gh-issue-161295.IJqoJM.rst
b/Misc/NEWS.d/next/Library/2026-11-03-21-26-09.gh-issue-161295.IJqoJM.rst
new file mode 100644
index 00000000000000..f2ede87899e940
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-11-03-21-26-09.gh-issue-161295.IJqoJM.rst
@@ -0,0 +1,2 @@
+:class:`reprlib.Repr` objects now have a meaningful :meth:`~object.__repr__`
+describing the instance attributes.
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