From 06ca86c69d4e021a6c553a411992126b1717035a Mon Sep 17 00:00:00 2001
From: Pieter Eendebak <pieter.eendebak@gmail.com>
Date: Fri, 9 Jun 2023 20:40:57 +0200
Subject: [PATCH 1/3] BUG: Allow np.info on non-hashable objects with a dtype

---
 numpy/core/getlimits.py            | 9 ++++++---
 numpy/core/tests/test_getlimits.py | 9 +++++++++
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/numpy/core/getlimits.py b/numpy/core/getlimits.py
index da9e1d7f311c..aaeb860a5dd9 100644
--- a/numpy/core/getlimits.py
+++ b/numpy/core/getlimits.py
@@ -482,9 +482,12 @@ class finfo:
     _finfo_cache = {}
 
     def __new__(cls, dtype):
-        obj = cls._finfo_cache.get(dtype)  # most common path
-        if obj is not None:
-            return obj
+        try:
+            obj = cls._finfo_cache.get(dtype)  # most common path
+            if obj is not None:
+                return obj
+        except TypeError:
+            obj = None
 
         if dtype is None:
             # Deprecated in NumPy 1.25, 2023-01-16
diff --git a/numpy/core/tests/test_getlimits.py b/numpy/core/tests/test_getlimits.py
index 63217c38c098..277b2762d7e7 100644
--- a/numpy/core/tests/test_getlimits.py
+++ b/numpy/core/tests/test_getlimits.py
@@ -73,6 +73,15 @@ def test_regression_gh23108(self):
         f2 = np.finfo(np.float64(1.0))
         assert f1 != f2
 
+    def test_regression_gh23867(self):
+        class NonHashableWithDtype:
+          __hash__ = None
+          dtype = np.dtype('float32')
+  
+        x = NonHashableWithDtype()
+        assert np.finfo(x) == np.finfo(x.dtype)
+        
+
 class TestIinfo:
     def test_basic(self):
         dts = list(zip(['i1', 'i2', 'i4', 'i8',

From f80cba56f0e0120bb14d18e16651552a2d4cedcd Mon Sep 17 00:00:00 2001
From: Pieter Eendebak <pieter.eendebak@gmail.com>
Date: Fri, 9 Jun 2023 20:49:35 +0200
Subject: [PATCH 2/3] lint

---
 numpy/core/tests/test_getlimits.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/numpy/core/tests/test_getlimits.py b/numpy/core/tests/test_getlimits.py
index 277b2762d7e7..f646e2bd7980 100644
--- a/numpy/core/tests/test_getlimits.py
+++ b/numpy/core/tests/test_getlimits.py
@@ -75,8 +75,8 @@ def test_regression_gh23108(self):
 
     def test_regression_gh23867(self):
         class NonHashableWithDtype:
-          __hash__ = None
-          dtype = np.dtype('float32')
+            __hash__ = None
+            dtype = np.dtype('float32')
   
         x = NonHashableWithDtype()
         assert np.finfo(x) == np.finfo(x.dtype)

From 4bb75f6b69ab687941e269c8f0c67c2872151971 Mon Sep 17 00:00:00 2001
From: Sebastian Berg <sebastian@sipsolutions.net>
Date: Fri, 9 Jun 2023 21:12:20 +0200
Subject: [PATCH 3/3] Update numpy/core/getlimits.py

---
 numpy/core/getlimits.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/numpy/core/getlimits.py b/numpy/core/getlimits.py
index aaeb860a5dd9..13414c2a64d6 100644
--- a/numpy/core/getlimits.py
+++ b/numpy/core/getlimits.py
@@ -487,7 +487,7 @@ def __new__(cls, dtype):
             if obj is not None:
                 return obj
         except TypeError:
-            obj = None
+            pass
 
         if dtype is None:
             # Deprecated in NumPy 1.25, 2023-01-16