From 13acb60fac6d96363008f9d5c0257ce1656cf68b Mon Sep 17 00:00:00 2001
From: Tian Gao <gaogaotiantian@hotmail.com>
Date: Sat, 15 Nov 2025 22:03:25 -0800
Subject: [PATCH 1/2] Check stdin instead of stdout for use_rawinput in pdb

---
 Lib/pdb.py           |  4 ++--
 Lib/test/test_pdb.py | 13 +++++++++++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/Lib/pdb.py b/Lib/pdb.py
index b799a113503502..2a168252f9f326 100644
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -346,8 +346,8 @@ def __init__(self, completekey='tab', stdin=None, stdout=None, skip=None,
         bdb.Bdb.__init__(self, skip=skip, backend=backend if backend else get_default_backend())
         cmd.Cmd.__init__(self, completekey, stdin, stdout)
         sys.audit("pdb.Pdb")
-        if stdout:
-            self.use_rawinput = 0
+        if stdin:
+            self.use_rawinput = False
         self.prompt = '(Pdb) '
         self.aliases = {}
         self.displaying = {}
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index 9a7d855003551a..b8ede93d7b4e0d 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -4710,6 +4710,19 @@ def test_readline_not_imported(self):
         self.assertNotIn("readline imported", stdout)
         self.assertEqual(stderr, "")
 
+    def test_alternate_stdin(self):
+        script = textwrap.dedent("""
+            import pdb
+            import io
+
+            input_data = io.StringIO("p 40 + 2\\nc\\n")
+            pdb.Pdb(stdin=input_data).set_trace()
+        """)
+        commands = ""
+        stdout, stderr = self._run_script(script, commands)
+        self.assertIn("42", stdout)
+        self.assertEqual(stderr, "")
+
 
 @support.force_colorized_test_class
 class PdbTestColorize(unittest.TestCase):

From ecf59a728ddebd197464cedfe06a7618f460a8a9 Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Sun, 16 Nov 2025 06:08:53 +0000
Subject: [PATCH 2/2] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../next/Library/2025-11-16-06-08-46.gh-issue-141615.--6EK3.rst  | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Library/2025-11-16-06-08-46.gh-issue-141615.--6EK3.rst

diff --git a/Misc/NEWS.d/next/Library/2025-11-16-06-08-46.gh-issue-141615.--6EK3.rst b/Misc/NEWS.d/next/Library/2025-11-16-06-08-46.gh-issue-141615.--6EK3.rst
new file mode 100644
index 00000000000000..bb54e68398722f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-11-16-06-08-46.gh-issue-141615.--6EK3.rst
@@ -0,0 +1 @@
+Check ``stdin`` instead of ``stdout`` for ``use_rawinput`` in :mod:`pdb`.