From 9f8747512917a74a90b6e6c4def04b7e78765995 Mon Sep 17 00:00:00 2001
From: Avasam <samuel.06@hotmail.com>
Date: Tue, 4 Jul 2023 16:44:32 -0400
Subject: [PATCH] Fix partially unknown Mat

---
 .../core/misc/python/package/mat_wrapper/__init__.py   | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/modules/core/misc/python/package/mat_wrapper/__init__.py b/modules/core/misc/python/package/mat_wrapper/__init__.py
index 7309c32b01..44832e7109 100644
--- a/modules/core/misc/python/package/mat_wrapper/__init__.py
+++ b/modules/core/misc/python/package/mat_wrapper/__init__.py
@@ -1,12 +1,18 @@
 __all__ = []
 
-import sys
 import numpy as np
 import cv2 as cv
+from typing import TYPE_CHECKING, Any
+
+# Type subscription is not possible in python 3.8
+if TYPE_CHECKING:
+    _NDArray = np.ndarray[Any, np.dtype[np.generic]]
+else:
+    _NDArray = np.ndarray
 
 # NumPy documentation: https://numpy.org/doc/stable/user/basics.subclassing.html
 
-class Mat(np.ndarray):
+class Mat(_NDArray):
     '''
     cv.Mat wrapper for numpy array.