From a5955c1ee9f98b6f75e5f7f390766d20bf96251e Mon Sep 17 00:00:00 2001
From: bswck <bartosz@ilikepython.com>
Date: Wed, 15 Oct 2025 02:10:34 +0200
Subject: [PATCH 1/3] Properly break exception chain in
 `importlib.metadata.Distribution.from_name`

---
 Lib/importlib/metadata/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/importlib/metadata/__init__.py b/Lib/importlib/metadata/__init__.py
index 1e2cea4009482a..b010bb8525e5cc 100644
--- a/Lib/importlib/metadata/__init__.py
+++ b/Lib/importlib/metadata/__init__.py
@@ -457,7 +457,7 @@ def from_name(cls, name: str) -> Distribution:
         try:
             return next(iter(cls._prefer_valid(cls.discover(name=name))))
         except StopIteration:
-            raise PackageNotFoundError(name)
+            raise PackageNotFoundError(name) from None
 
     @classmethod
     def discover(

From 741efba10d0e3e80ca833f4e3a221a395593de1f Mon Sep 17 00:00:00 2001
From: bswck <bartosz@ilikepython.com>
Date: Wed, 15 Oct 2025 17:24:26 +0200
Subject: [PATCH 2/3] Add news entry

---
 .../Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst  | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst

diff --git a/Misc/NEWS.d/next/Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst b/Misc/NEWS.d/next/Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst
new file mode 100644
index 00000000000000..90c5dd906fc033
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst
@@ -0,0 +1,6 @@
+When a distribution cannot be discovered with
+``importlib.metadata.Distribution.from_name``, the
+:py:class:`importlib.metadata.PackageNotFoundError` traceback no longer
+includes a transient :exc:`StopIteration` exception.
+
+Contributed by Bartosz Sławecki in :gh:`140142`.

From 8a8323755c4745f3ec6d2c457d3513280fcbe486 Mon Sep 17 00:00:00 2001
From: bswck <bartosz@ilikepython.com>
Date: Wed, 15 Oct 2025 17:26:57 +0200
Subject: [PATCH 3/3] Rephrase the news entry

---
 .../Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/Misc/NEWS.d/next/Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst b/Misc/NEWS.d/next/Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst
index 90c5dd906fc033..2edadbc3e3887c 100644
--- a/Misc/NEWS.d/next/Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst
+++ b/Misc/NEWS.d/next/Library/2025-10-15-17-23-51.gh-issue-140141.j2mUDB.rst
@@ -1,6 +1,5 @@
-When a distribution cannot be discovered with
-``importlib.metadata.Distribution.from_name``, the
-:py:class:`importlib.metadata.PackageNotFoundError` traceback no longer
-includes a transient :exc:`StopIteration` exception.
+The :py:class:`importlib.metadata.PackageNotFoundError` traceback raised when
+``importlib.metadata.Distribution.from_name`` cannot discover a
+distribution no longer includes a transient :exc:`StopIteration` exception trace.
 
 Contributed by Bartosz Sławecki in :gh:`140142`.