From b66aed759c437322534462101c41c097b7e37f80 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Sat, 20 Jul 2024 11:06:34 +0200
Subject: [PATCH 01/13] cast all tuple subclass index keys to tuple

---
 doc/source/whatsnew/v3.0.0.rst | 1 +
 pandas/core/indexes/base.py    | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index c5c886912eae0..97f4fc4693cdf 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -33,6 +33,7 @@ Other enhancements
 - :func:`DataFrame.to_excel` now raises an ``UserWarning`` when the character count in a cell exceeds Excel's limitation of 32767 characters (:issue:`56954`)
 - :func:`read_stata` now returns ``datetime64`` resolutions better matching those natively stored in the stata format (:issue:`55642`)
 - :meth:`DataFrame.agg` called with ``axis=1`` and a ``func`` which relabels the result index now raises a ``NotImplementedError`` (:issue:`58807`).
+- :meth:`Index.get_loc` now accepts also subclasses of ``tuple`` as a keys (:issue:`57922`)
 - :meth:`Styler.set_tooltips` provides alternative method to storing tooltips by using title attribute of td elements. (:issue:`56981`)
 - Allow dictionaries to be passed to :meth:`pandas.Series.str.replace` via ``pat`` parameter (:issue:`51748`)
 - Support passing a :class:`Series` input to :func:`json_normalize` that retains the :class:`Series` :class:`Index` (:issue:`51452`)
diff --git a/pandas/core/indexes/base.py b/pandas/core/indexes/base.py
index 5bffac5fa64b6..5a774867ff5b4 100644
--- a/pandas/core/indexes/base.py
+++ b/pandas/core/indexes/base.py
@@ -3568,6 +3568,8 @@ def get_loc(self, key):
         array([False,  True, False,  True])
         """
         casted_key = self._maybe_cast_indexer(key)
+        if isinstance(casted_key, tuple):
+            casted_key = tuple(casted_key)
         try:
             return self._engine.get_loc(casted_key)
         except KeyError as err:

From 4f191e919a83debea652d0054a449f082b398ab7 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Sat, 20 Jul 2024 11:08:16 +0200
Subject: [PATCH 02/13] fix docs typo

---
 doc/source/whatsnew/v3.0.0.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 97f4fc4693cdf..0411cb96d592e 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -33,7 +33,7 @@ Other enhancements
 - :func:`DataFrame.to_excel` now raises an ``UserWarning`` when the character count in a cell exceeds Excel's limitation of 32767 characters (:issue:`56954`)
 - :func:`read_stata` now returns ``datetime64`` resolutions better matching those natively stored in the stata format (:issue:`55642`)
 - :meth:`DataFrame.agg` called with ``axis=1`` and a ``func`` which relabels the result index now raises a ``NotImplementedError`` (:issue:`58807`).
-- :meth:`Index.get_loc` now accepts also subclasses of ``tuple`` as a keys (:issue:`57922`)
+- :meth:`Index.get_loc` now accepts also subclasses of ``tuple`` as keys (:issue:`57922`)
 - :meth:`Styler.set_tooltips` provides alternative method to storing tooltips by using title attribute of td elements. (:issue:`56981`)
 - Allow dictionaries to be passed to :meth:`pandas.Series.str.replace` via ``pat`` parameter (:issue:`51748`)
 - Support passing a :class:`Series` input to :func:`json_normalize` that retains the :class:`Series` :class:`Index` (:issue:`51452`)

From b5fdd7b45b4422aa40560ef36cc0dd463ab7d6a3 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Sat, 20 Jul 2024 15:06:20 +0200
Subject: [PATCH 03/13] add multi-index namedtuple test

---
 pandas/tests/indexes/multi/test_indexing.py | 24 +++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/pandas/tests/indexes/multi/test_indexing.py b/pandas/tests/indexes/multi/test_indexing.py
index f08a7625e7f8a..d82203a53a60f 100644
--- a/pandas/tests/indexes/multi/test_indexing.py
+++ b/pandas/tests/indexes/multi/test_indexing.py
@@ -1,3 +1,4 @@
+from collections import namedtuple
 from datetime import timedelta
 import re
 
@@ -1006,3 +1007,26 @@ def test_get_indexer_for_multiindex_with_nans(nulls_fixture):
     result = idx1.get_indexer(idx2)
     expected = np.array([-1, 1], dtype=np.intp)
     tm.assert_numpy_array_equal(result, expected)
+
+
+def test_get_loc_namedtuple_behaves_like_tuple():
+    # GH57922
+    NamedIndex = namedtuple("NamedIndex", ("a", "b"))
+    multi_idx = MultiIndex.from_tuples(
+        [NamedIndex("i1", "i2"), NamedIndex("i3", "i4"), NamedIndex("i5", "i6")]
+    )
+    for idx in (multi_idx, multi_idx.to_flat_index()):
+        assert idx.get_loc(NamedIndex("i1", "i2")) == 0
+        assert idx.get_loc(NamedIndex("i3", "i4")) == 1
+        assert idx.get_loc(NamedIndex("i5", "i6")) == 2
+        assert idx.get_loc(("i1", "i2")) == 0
+        assert idx.get_loc(("i3", "i4")) == 1
+        assert idx.get_loc(("i5", "i6")) == 2
+    multi_idx = MultiIndex.from_tuples([("i1", "i2"), ("i3", "i4"), ("i5", "i6")])
+    for idx in (multi_idx, multi_idx.to_flat_index()):
+        assert idx.get_loc(NamedIndex("i1", "i2")) == 0
+        assert idx.get_loc(NamedIndex("i3", "i4")) == 1
+        assert idx.get_loc(NamedIndex("i5", "i6")) == 2
+        assert idx.get_loc(("i1", "i2")) == 0
+        assert idx.get_loc(("i3", "i4")) == 1
+        assert idx.get_loc(("i5", "i6")) == 2

From af115209d174bf9f833ba832317b64f8ff53de18 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Sun, 21 Jul 2024 14:17:57 +0200
Subject: [PATCH 04/13] hash and compare all tuple subclasses as tuples

---
 pandas/_libs/include/pandas/vendored/klib/khash_python.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pandas/_libs/include/pandas/vendored/klib/khash_python.h b/pandas/_libs/include/pandas/vendored/klib/khash_python.h
index 8d4c382241d39..40ce2622fec66 100644
--- a/pandas/_libs/include/pandas/vendored/klib/khash_python.h
+++ b/pandas/_libs/include/pandas/vendored/klib/khash_python.h
@@ -207,7 +207,7 @@ static inline int pyobject_cmp(PyObject *a, PyObject *b) {
     if (PyComplex_CheckExact(a)) {
       return complexobject_cmp((PyComplexObject *)a, (PyComplexObject *)b);
     }
-    if (PyTuple_CheckExact(a)) {
+    if (PyTuple_Check(a)) {
       return tupleobject_cmp((PyTupleObject *)a, (PyTupleObject *)b);
     }
     // frozenset isn't yet supported
@@ -311,7 +311,7 @@ static inline khuint32_t kh_python_hash_func(PyObject *key) {
     // because complex(k,0) == k holds for any int-object k
     // and kh_complex128_hash_func doesn't respect it
     hash = complexobject_hash((PyComplexObject *)key);
-  } else if (PyTuple_CheckExact(key)) {
+  } else if (PyTuple_Check(key)) {
     hash = tupleobject_hash((PyTupleObject *)key);
   } else {
     hash = PyObject_Hash(key);

From 68cabf313b2de4a57ca7bc7e47a192db6eca6356 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Sun, 21 Jul 2024 14:18:29 +0200
Subject: [PATCH 05/13] test hashtable with namedtuples

---
 pandas/tests/libs/test_hashtable.py | 30 +++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/pandas/tests/libs/test_hashtable.py b/pandas/tests/libs/test_hashtable.py
index b70386191d9d9..db127851d8ac7 100644
--- a/pandas/tests/libs/test_hashtable.py
+++ b/pandas/tests/libs/test_hashtable.py
@@ -1,3 +1,4 @@
+from collections import namedtuple
 from collections.abc import Generator
 from contextlib import contextmanager
 import re
@@ -440,6 +441,27 @@ def test_nan_in_nested_tuple(self):
             table.get_item(other)
         assert str(error.value) == str(other)
 
+    def test_nan_in_namedtuple(self):
+        T = namedtuple("T", ["x"])
+        nan1 = T(float("nan"))
+        nan2 = T(float("nan"))
+        assert nan1.x is not nan2.x
+        table = ht.PyObjectHashTable()
+        table.set_item(nan1, 42)
+        assert table.get_item(nan2) == 42
+
+    def test_nan_in_nested_namedtuple(self):
+        T = namedtuple("T", ["x", "y"])
+        nan1 = T(1, (2, (float("nan"),)))
+        nan2 = T(1, (2, (float("nan"),)))
+        other = T(1, 2)
+        table = ht.PyObjectHashTable()
+        table.set_item(nan1, 42)
+        assert table.get_item(nan2) == 42
+        with pytest.raises(KeyError, match=None) as error:
+            table.get_item(other)
+        assert str(error.value) == str(other)
+
 
 def test_hash_equal_tuple_with_nans():
     a = (float("nan"), (float("nan"), float("nan")))
@@ -448,6 +470,14 @@ def test_hash_equal_tuple_with_nans():
     assert ht.objects_are_equal(a, b)
 
 
+def test_hash_equal_namedtuple_with_nans():
+    T = namedtuple("T", ["x", "y"])
+    a = T(float("nan"), (float("nan"), float("nan")))
+    b = T(float("nan"), (float("nan"), float("nan")))
+    assert ht.object_hash(a) == ht.object_hash(b)
+    assert ht.objects_are_equal(a, b)
+
+
 def test_get_labels_groupby_for_Int64(writable):
     table = ht.Int64HashTable()
     vals = np.array([1, 2, -1, 2, 1, -1], dtype=np.int64)

From e800139714531a48de5ed8737b902e8125853ec9 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Sun, 21 Jul 2024 14:22:53 +0200
Subject: [PATCH 06/13] remove redundant index key conversion

---
 pandas/core/indexes/base.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/pandas/core/indexes/base.py b/pandas/core/indexes/base.py
index 5a774867ff5b4..5bffac5fa64b6 100644
--- a/pandas/core/indexes/base.py
+++ b/pandas/core/indexes/base.py
@@ -3568,8 +3568,6 @@ def get_loc(self, key):
         array([False,  True, False,  True])
         """
         casted_key = self._maybe_cast_indexer(key)
-        if isinstance(casted_key, tuple):
-            casted_key = tuple(casted_key)
         try:
             return self._engine.get_loc(casted_key)
         except KeyError as err:

From 54009c324d5a10ab26e0820ac07315c96d75d07c Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Sun, 21 Jul 2024 19:45:08 +0200
Subject: [PATCH 07/13] add comments

---
 pandas/_libs/include/pandas/vendored/klib/khash_python.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pandas/_libs/include/pandas/vendored/klib/khash_python.h b/pandas/_libs/include/pandas/vendored/klib/khash_python.h
index 40ce2622fec66..2fa61642968cf 100644
--- a/pandas/_libs/include/pandas/vendored/klib/khash_python.h
+++ b/pandas/_libs/include/pandas/vendored/klib/khash_python.h
@@ -208,6 +208,7 @@ static inline int pyobject_cmp(PyObject *a, PyObject *b) {
       return complexobject_cmp((PyComplexObject *)a, (PyComplexObject *)b);
     }
     if (PyTuple_Check(a)) {
+      // compare tuple subclasses as builtin tuples
       return tupleobject_cmp((PyTupleObject *)a, (PyTupleObject *)b);
     }
     // frozenset isn't yet supported
@@ -312,6 +313,7 @@ static inline khuint32_t kh_python_hash_func(PyObject *key) {
     // and kh_complex128_hash_func doesn't respect it
     hash = complexobject_hash((PyComplexObject *)key);
   } else if (PyTuple_Check(key)) {
+    // hash tuple subclasses as builtin tuples
     hash = tupleobject_hash((PyTupleObject *)key);
   } else {
     hash = PyObject_Hash(key);

From 190ac69a8305113e3be1bdab5c41665432382fd6 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Sun, 21 Jul 2024 20:02:09 +0200
Subject: [PATCH 08/13] update whatsnew

---
 doc/source/whatsnew/v3.0.0.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 0411cb96d592e..74a82bffb5e27 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -35,6 +35,7 @@ Other enhancements
 - :meth:`DataFrame.agg` called with ``axis=1`` and a ``func`` which relabels the result index now raises a ``NotImplementedError`` (:issue:`58807`).
 - :meth:`Index.get_loc` now accepts also subclasses of ``tuple`` as keys (:issue:`57922`)
 - :meth:`Styler.set_tooltips` provides alternative method to storing tooltips by using title attribute of td elements. (:issue:`56981`)
+- All classes inheriting from builtin ``tuple`` (including types created with :func:`collections.namedtuple`) are now hashed and compared as builtin ``tuple`` (:issue:`57922`)
 - Allow dictionaries to be passed to :meth:`pandas.Series.str.replace` via ``pat`` parameter (:issue:`51748`)
 - Support passing a :class:`Series` input to :func:`json_normalize` that retains the :class:`Series` :class:`Index` (:issue:`51452`)
 - Support reading value labels from Stata 108-format (Stata 6) and earlier files (:issue:`58154`)

From 8ad9e4c61c693127de16c0e936a368c412cba746 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Mon, 22 Jul 2024 20:05:18 +0200
Subject: [PATCH 09/13] check key error message

---
 pandas/tests/libs/test_hashtable.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pandas/tests/libs/test_hashtable.py b/pandas/tests/libs/test_hashtable.py
index db127851d8ac7..710faad099c9b 100644
--- a/pandas/tests/libs/test_hashtable.py
+++ b/pandas/tests/libs/test_hashtable.py
@@ -458,7 +458,7 @@ def test_nan_in_nested_namedtuple(self):
         table = ht.PyObjectHashTable()
         table.set_item(nan1, 42)
         assert table.get_item(nan2) == 42
-        with pytest.raises(KeyError, match=None) as error:
+        with pytest.raises(KeyError, match=re.escape(repr(other))) as error:
             table.get_item(other)
         assert str(error.value) == str(other)
 

From 70d6511c70d118368ef306b83ac921f1e7ef7a72 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Mon, 22 Jul 2024 20:06:10 +0200
Subject: [PATCH 10/13] fix whatsnew section

---
 doc/source/whatsnew/v3.0.0.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 9afa41097a9d2..78bed1b815864 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -35,7 +35,6 @@ Other enhancements
 - :meth:`DataFrame.agg` called with ``axis=1`` and a ``func`` which relabels the result index now raises a ``NotImplementedError`` (:issue:`58807`).
 - :meth:`Index.get_loc` now accepts also subclasses of ``tuple`` as keys (:issue:`57922`)
 - :meth:`Styler.set_tooltips` provides alternative method to storing tooltips by using title attribute of td elements. (:issue:`56981`)
-- All classes inheriting from builtin ``tuple`` (including types created with :func:`collections.namedtuple`) are now hashed and compared as builtin ``tuple`` (:issue:`57922`)
 - Allow dictionaries to be passed to :meth:`pandas.Series.str.replace` via ``pat`` parameter (:issue:`51748`)
 - Support passing a :class:`Series` input to :func:`json_normalize` that retains the :class:`Series` :class:`Index` (:issue:`51452`)
 - Support reading value labels from Stata 108-format (Stata 6) and earlier files (:issue:`58154`)
@@ -233,6 +232,7 @@ Other API changes
 ^^^^^^^^^^^^^^^^^
 - 3rd party ``py.path`` objects are no longer explicitly supported in IO methods. Use :py:class:`pathlib.Path` objects instead (:issue:`57091`)
 - :func:`read_table`'s ``parse_dates`` argument defaults to ``None`` to improve consistency with :func:`read_csv` (:issue:`57476`)
+- All classes inheriting from builtin ``tuple`` (including types created with :func:`collections.namedtuple`) are now hashed and compared as builtin ``tuple`` (:issue:`57922`)
 - Made ``dtype`` a required argument in :meth:`ExtensionArray._from_sequence_of_strings` (:issue:`56519`)
 - Passing a :class:`Series` input to :func:`json_normalize` will now retain the :class:`Series` :class:`Index`, previously output had a new :class:`RangeIndex` (:issue:`51452`)
 - Updated :meth:`DataFrame.to_excel` so that the output spreadsheet has no styling. Custom styling can still be done using :meth:`Styler.to_excel` (:issue:`54154`)

From 2ef52ebf296d91fc1381a9b43af48391180c1d60 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Mon, 22 Jul 2024 20:36:51 +0200
Subject: [PATCH 11/13] test namedtuple and tuple interchangeable in hashtable

---
 pandas/tests/libs/test_hashtable.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pandas/tests/libs/test_hashtable.py b/pandas/tests/libs/test_hashtable.py
index 710faad099c9b..223c4e3d2c8ab 100644
--- a/pandas/tests/libs/test_hashtable.py
+++ b/pandas/tests/libs/test_hashtable.py
@@ -478,6 +478,14 @@ def test_hash_equal_namedtuple_with_nans():
     assert ht.objects_are_equal(a, b)
 
 
+def test_hash_equal_namedtuple_and_tuple():
+    T = namedtuple("T", ["x", "y"])
+    a = T(1, (2, 3))
+    b = (1, (2, 3))
+    assert ht.object_hash(a) == ht.object_hash(b)
+    assert ht.objects_are_equal(a, b)
+
+
 def test_get_labels_groupby_for_Int64(writable):
     table = ht.Int64HashTable()
     vals = np.array([1, 2, -1, 2, 1, -1], dtype=np.int64)

From d5965029ded7578273d14fc4980f17b90e7ae732 Mon Sep 17 00:00:00 2001
From: matiaslindgren <matias.lindgren@iki.fi>
Date: Mon, 22 Jul 2024 22:30:14 +0200
Subject: [PATCH 12/13] Update doc/source/whatsnew/v3.0.0.rst

Co-authored-by: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
---
 doc/source/whatsnew/v3.0.0.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 78bed1b815864..d940d564b8df2 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -232,7 +232,7 @@ Other API changes
 ^^^^^^^^^^^^^^^^^
 - 3rd party ``py.path`` objects are no longer explicitly supported in IO methods. Use :py:class:`pathlib.Path` objects instead (:issue:`57091`)
 - :func:`read_table`'s ``parse_dates`` argument defaults to ``None`` to improve consistency with :func:`read_csv` (:issue:`57476`)
-- All classes inheriting from builtin ``tuple`` (including types created with :func:`collections.namedtuple`) are now hashed and compared as builtin ``tuple`` (:issue:`57922`)
+- All classes inheriting from builtin ``tuple`` (including types created with :func:`collections.namedtuple`) are now hashed and compared as builtin ``tuple`` during indexing operations (:issue:`57922`)
 - Made ``dtype`` a required argument in :meth:`ExtensionArray._from_sequence_of_strings` (:issue:`56519`)
 - Passing a :class:`Series` input to :func:`json_normalize` will now retain the :class:`Series` :class:`Index`, previously output had a new :class:`RangeIndex` (:issue:`51452`)
 - Updated :meth:`DataFrame.to_excel` so that the output spreadsheet has no styling. Custom styling can still be done using :meth:`Styler.to_excel` (:issue:`54154`)

From 1554eb749c4aefc3957f57b969d8f95a9c16c086 Mon Sep 17 00:00:00 2001
From: Matias Lindgren <matias.lindgren@iki.fi>
Date: Mon, 22 Jul 2024 22:29:50 +0200
Subject: [PATCH 13/13] use pytest.raises regexp instead of str eq

---
 pandas/tests/libs/test_hashtable.py | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/pandas/tests/libs/test_hashtable.py b/pandas/tests/libs/test_hashtable.py
index 223c4e3d2c8ab..50b561aefcf49 100644
--- a/pandas/tests/libs/test_hashtable.py
+++ b/pandas/tests/libs/test_hashtable.py
@@ -406,9 +406,8 @@ def test_nan_complex_real(self):
         table = ht.PyObjectHashTable()
         table.set_item(nan1, 42)
         assert table.get_item(nan2) == 42
-        with pytest.raises(KeyError, match=None) as error:
+        with pytest.raises(KeyError, match=re.escape(repr(other))):
             table.get_item(other)
-        assert str(error.value) == str(other)
 
     def test_nan_complex_imag(self):
         nan1 = complex(1, float("nan"))
@@ -418,9 +417,8 @@ def test_nan_complex_imag(self):
         table = ht.PyObjectHashTable()
         table.set_item(nan1, 42)
         assert table.get_item(nan2) == 42
-        with pytest.raises(KeyError, match=None) as error:
+        with pytest.raises(KeyError, match=re.escape(repr(other))):
             table.get_item(other)
-        assert str(error.value) == str(other)
 
     def test_nan_in_tuple(self):
         nan1 = (float("nan"),)
@@ -437,9 +435,8 @@ def test_nan_in_nested_tuple(self):
         table = ht.PyObjectHashTable()
         table.set_item(nan1, 42)
         assert table.get_item(nan2) == 42
-        with pytest.raises(KeyError, match=None) as error:
+        with pytest.raises(KeyError, match=re.escape(repr(other))):
             table.get_item(other)
-        assert str(error.value) == str(other)
 
     def test_nan_in_namedtuple(self):
         T = namedtuple("T", ["x"])
@@ -458,9 +455,8 @@ def test_nan_in_nested_namedtuple(self):
         table = ht.PyObjectHashTable()
         table.set_item(nan1, 42)
         assert table.get_item(nan2) == 42
-        with pytest.raises(KeyError, match=re.escape(repr(other))) as error:
+        with pytest.raises(KeyError, match=re.escape(repr(other))):
             table.get_item(other)
-        assert str(error.value) == str(other)
 
 
 def test_hash_equal_tuple_with_nans():