From 993f5629860230cd056ed8ebcdd2e90d4494e4f3 Mon Sep 17 00:00:00 2001
From: Luke Marshall <52978038+mathgeekcoder@users.noreply.github.com>
Date: Thu, 26 Sep 2024 16:27:13 -0700
Subject: [PATCH] Fixed python 3.8 typing issue.

---
 src/highspy/highs.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/highspy/highs.py b/src/highspy/highs.py
index 91144d37de..80255b15d6 100644
--- a/src/highspy/highs.py
+++ b/src/highspy/highs.py
@@ -1,4 +1,5 @@
 from __future__ import annotations
+import sys
 import numpy as np
 from numbers import Integral
 from itertools import product
@@ -15,6 +16,11 @@
     kHighsInf,
 )
 
+# backwards typing support information for HighspyArray
+if sys.version_info >= (3, 9):
+    ndarray_object_type = np.ndarray[Any, np.dtype[np.object_]]
+else:
+    ndarray_object_type = np.ndarray
 
 class Highs(_Highs):
     """
@@ -1471,7 +1477,7 @@ def fire(
             fn(e)
 
 
-class HighspyArray(np.ndarray[Any, np.dtype[np.object_]]):
+class HighspyArray(ndarray_object_type):
     """
     A numpy array wrapper for highs_var/highs_linear_expression objects.