From 9b109f2fe130050f16842b306d21267e73d625e7 Mon Sep 17 00:00:00 2001
From: Chadwick Boulay <chadwick.boulay@gmail.com>
Date: Fri, 8 Aug 2025 17:50:35 -0400
Subject: [PATCH 1/3] Replaced stacked @classmethod @property decorator with
 custom @classproperty to fix compatibility with Python 3.13.

---
 src/pycbsdk/cbhw/packet/abstract.py    | 9 +++++++++
 src/pycbsdk/cbhw/packet/header/v311.py | 6 ++++--
 src/pycbsdk/cbhw/packet/header/v40.py  | 4 ++--
 src/pycbsdk/cbhw/packet/header/v41.py  | 4 ++--
 4 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/src/pycbsdk/cbhw/packet/abstract.py b/src/pycbsdk/cbhw/packet/abstract.py
index 0872b6d..3d2e068 100644
--- a/src/pycbsdk/cbhw/packet/abstract.py
+++ b/src/pycbsdk/cbhw/packet/abstract.py
@@ -2,6 +2,15 @@
 from ctypes import *
 import struct
 import numpy as np
+
+
+class classproperty(object):
+    def __init__(self, f):
+        self.f = f
+
+    def __get__(self, obj, owner):
+        return self.f(owner)
+
 import numpy.typing
 from .common import (
     CBPacketType,
diff --git a/src/pycbsdk/cbhw/packet/header/v311.py b/src/pycbsdk/cbhw/packet/header/v311.py
index 8025b6f..80d6433 100644
--- a/src/pycbsdk/cbhw/packet/header/v311.py
+++ b/src/pycbsdk/cbhw/packet/header/v311.py
@@ -1,6 +1,9 @@
 from ctypes import *
 
 
+from ..abstract import classproperty
+
+
 class CBPacketHeader(Structure):
     _pack_ = 1
     _fields_ = [
@@ -13,7 +16,6 @@ class CBPacketHeader(Structure):
         ),  # Number of 32-bit elements in packet body. * 4 to get number of bytes.
     ]
 
-    @classmethod
-    @property
+    @classproperty
     def HEADER_FORMAT(cls):
         return "<LHBB"
diff --git a/src/pycbsdk/cbhw/packet/header/v40.py b/src/pycbsdk/cbhw/packet/header/v40.py
index 9dd5a10..e667e49 100644
--- a/src/pycbsdk/cbhw/packet/header/v40.py
+++ b/src/pycbsdk/cbhw/packet/header/v40.py
@@ -1,4 +1,5 @@
 from ctypes import *
+from ..abstract import classproperty
 
 
 class CBPacketHeader(Structure):
@@ -15,7 +16,6 @@ class CBPacketHeader(Structure):
         ("reserved", 2 * c_uint8),
     ]
 
-    @classmethod
-    @property
+    @classproperty
     def HEADER_FORMAT(cls):
         return "<QHBHBH"
diff --git a/src/pycbsdk/cbhw/packet/header/v41.py b/src/pycbsdk/cbhw/packet/header/v41.py
index ee8654e..421a8e4 100644
--- a/src/pycbsdk/cbhw/packet/header/v41.py
+++ b/src/pycbsdk/cbhw/packet/header/v41.py
@@ -1,4 +1,5 @@
 from ctypes import *
+from ..abstract import classproperty
 from ..common import print_pretty
 
 
@@ -17,7 +18,6 @@ class CBPacketHeader(Structure):
         ("reserved", c_uint8),  # Changed in this version; used to be 2 * c_uint8
     ]
 
-    @classmethod
-    @property
+    @classproperty
     def HEADER_FORMAT(cls):
         return "<QHHHBB"

From 7a830af8394f835c98a113b9fa31b10265388725 Mon Sep 17 00:00:00 2001
From: Chadwick Boulay <chadwick.boulay@gmail.com>
Date: Fri, 8 Aug 2025 17:57:11 -0400
Subject: [PATCH 2/3] Update python-tests.yml to add 3.13, drop 3.9

---
 .github/workflows/python-tests.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
index cf4a132..1fc93f7 100644
--- a/.github/workflows/python-tests.yml
+++ b/.github/workflows/python-tests.yml
@@ -13,7 +13,7 @@ jobs:
   build:
     strategy:
       matrix:
-        python-version: [3.9, "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         os:
           - "ubuntu-latest"
           - "windows-latest"

From 85f05682d119462b22ef1f789338038ccd5b6191 Mon Sep 17 00:00:00 2001
From: Chadwick Boulay <chadwick.boulay@gmail.com>
Date: Fri, 8 Aug 2025 18:02:21 -0400
Subject: [PATCH 3/3] Drop Python 3.9 support from pyproject.toml -- not
 strictly needed yet but this will likely avoid future problems

---
 pyproject.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyproject.toml b/pyproject.toml
index 7afc4ba..1cd73a5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ authors = [
 ]
 license = "MIT"
 readme = "README.md"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dynamic = ["version"]
 dependencies = [
     "numpy",