From 5d7b377faf140c20e613a738f916d3bc3f2f54a6 Mon Sep 17 00:00:00 2001
From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Sat, 5 Apr 2025 10:41:21 +0100
Subject: [PATCH] style: define a symbolic const for null values in array

---
 psycopg/psycopg/types/array.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/psycopg/psycopg/types/array.py b/psycopg/psycopg/types/array.py
index 5c80444fa..45becba3e 100644
--- a/psycopg/psycopg/types/array.py
+++ b/psycopg/psycopg/types/array.py
@@ -33,6 +33,8 @@ _unpack_dim = cast(Callable[[Buffer, int], "tuple[int, int]"], _struct_dim.unpac
 PY_TEXT = PyFormat.TEXT
 PQ_BINARY = pq.Format.BINARY
 
+ARRAY_NULL = b"\xff\xff\xff\xff"
+
 
 class BaseListDumper(RecursiveDumper):
     element_oid = INVALID_OID
@@ -275,7 +277,7 @@ class ListBinaryDumper(BaseListDumper):
                         data.append(item)
                     else:
                         hasnull = 1
-                        data.append(b"\xff\xff\xff\xff")
+                        data.append(ARRAY_NULL)
             else:
                 for item in L:
                     if not isinstance(item, self.cls):
-- 
2.47.2