From baef24141a749a52596b6637b74ff205726f4e3f Mon Sep 17 00:00:00 2001
From: Timofei Ivankov <128279579+deadlovelll@users.noreply.github.com>
Date: Thu, 5 Nov 2026 08:58:56 +0300
Subject: [PATCH] gh-161166: Fix incorrect exception line in
 asyncio.Task.print_stack()

---
 Lib/asyncio/base_tasks.py                         |  9 +++++++--
 Lib/test/test_asyncio/test_tasks.py               | 15 +++++++++++++++
 ...2026-11-02-13-11-30.gh-issue-161166.zfFDlW.rst |  2 ++
 3 files changed, 24 insertions(+), 2 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Library/2026-11-02-13-11-30.gh-issue-161166.zfFDlW.rst

diff --git a/Lib/asyncio/base_tasks.py b/Lib/asyncio/base_tasks.py
index c907b683413732..d588be96fb0f6e 100644
--- a/Lib/asyncio/base_tasks.py
+++ b/Lib/asyncio/base_tasks.py
@@ -67,10 +67,16 @@ def _task_get_stack(task, limit):
 
 
 def _task_print_stack(task, limit, file):
+    exc = task._exception
+    tb = exc.__traceback__ if exc is not None else None
     extracted_list = []
     checked = set()
     for f in task.get_stack(limit=limit):
-        lineno = f.f_lineno
+        if tb is not None:
+            lineno = tb.tb_lineno
+            tb = tb.tb_next
+        else:
+            lineno = f.f_lineno
         co = f.f_code
         filename = co.co_filename
         name = co.co_name
@@ -80,7 +86,6 @@ def _task_print_stack(task, limit, file):
         line = linecache.getline(filename, lineno, f.f_globals)
         extracted_list.append((filename, lineno, name, line))
 
-    exc = task._exception
     if not extracted_list:
         print(f'No stack for {task!r}', file=file)
     elif exc is not None:
diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py
index 9b8df40ec6ece6..d6a835792681a1 100644
--- a/Lib/test/test_asyncio/test_tasks.py
+++ b/Lib/test/test_asyncio/test_tasks.py
@@ -335,6 +335,21 @@ async def runner():
 
         self.loop.run_until_complete(runner())
 
+    def test_print_stack_exception_lineno(self):
+        # gh-161166
+        async def coro():
+            try:
+                1 / 0
+            finally:
+                cleaned = True
+
+        task = self.new_task(self.loop, coro())
+        test_utils.run_briefly(self.loop)
+        task.exception()
+        file = io.StringIO()
+        task.print_stack(file=file)
+        self.assertIn('    1 / 0\n', file.getvalue())
+
     def test_task_repr(self):
         self.loop.set_debug(False)
 
diff --git a/Misc/NEWS.d/next/Library/2026-11-02-13-11-30.gh-issue-161166.zfFDlW.rst b/Misc/NEWS.d/next/Library/2026-11-02-13-11-30.gh-issue-161166.zfFDlW.rst
new file mode 100644
index 00000000000000..4d66a399f5e655
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-11-02-13-11-30.gh-issue-161166.zfFDlW.rst
@@ -0,0 +1,2 @@
+Fix :meth:`asyncio.Task.print_stack` displaying an incorrect exception line
+after a ``finally`` block. Patch by Timofei Ivankov.