From 9d6eead65779951f2dd2692c2619b38bb6f58a40 Mon Sep 17 00:00:00 2001
From: aokizy <14817191+aokizy2@user.noreply.gitee.com>
Date: Fri, 26 Dec 2025 10:37:45 +0800
Subject: [PATCH 1/2] fix ipc.pxi

---
 python/pyarrow/ipc.pxi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/pyarrow/ipc.pxi b/python/pyarrow/ipc.pxi
index 2347b3c7a35..6477579af21 100644
--- a/python/pyarrow/ipc.pxi
+++ b/python/pyarrow/ipc.pxi
@@ -479,7 +479,7 @@ cdef class Message(_Weakrefable):
         body = self.body
         body_len = 0 if body is None else body.size
 
-        return """pyarrow.Message
+        return f"""pyarrow.Message
 type: {self.type}
 metadata length: {metadata_len}
 body length: {body_len}"""

From 634aeebf49e0796eec4040a63112ce4649a0600f Mon Sep 17 00:00:00 2001
From: aokizy <14817191+aokizy2@user.noreply.gitee.com>
Date: Sat, 3 Jan 2026 01:08:29 +0800
Subject: [PATCH 2/2] add a test of message _repr_

---
 python/pyarrow/tests/test_ipc.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/python/pyarrow/tests/test_ipc.py b/python/pyarrow/tests/test_ipc.py
index b4db9cd0875..6813ed77723 100644
--- a/python/pyarrow/tests/test_ipc.py
+++ b/python/pyarrow/tests/test_ipc.py
@@ -779,6 +779,18 @@ def test_message_serialize_read_message(example_messages):
         pa.ipc.read_message(reader)
 
 
+def test_message_repr_shows_actual_values(example_messages):
+    _, messages = example_messages
+
+    for msg in messages:
+        s = str(msg)
+
+        assert '{self.type}' not in s
+        assert '{metadata_len}' not in s
+        assert '{body_len}' not in s
+        assert f'type: {msg.type}' in s
+
+
 @pytest.mark.gzip
 def test_message_read_from_compressed(example_messages):
     # Part of ARROW-5910