From 6d343a372846fe46b552b7e0f1fb46a7841e51a6 Mon Sep 17 00:00:00 2001
From: Kevin <swimmingkevin2012@gmail.com>
Date: Fri, 11 Aug 2023 13:12:49 -0700
Subject: [PATCH 1/3] mend

---
 pandas/_libs/testing.pyx                      |  8 +++++++-
 pandas/tests/dtypes/test_inference.py         |  3 +++
 pandas/tests/util/test_assert_almost_equal.py | 14 ++++++++++++++
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/pandas/_libs/testing.pyx b/pandas/_libs/testing.pyx
index 4ba7bce51ed64..ea01e55792a67 100644
--- a/pandas/_libs/testing.pyx
+++ b/pandas/_libs/testing.pyx
@@ -24,7 +24,13 @@ from pandas.core.dtypes.missing import array_equivalent
 
 
 cdef bint isiterable(obj):
-    return hasattr(obj, "__iter__")
+    if hasattr(obj, "__iter__"):
+        try:
+            iter(obj)
+            return True
+        except (TypeError, IndexError) as e:
+            return False
+    return False
 
 
 cdef bint has_length(obj):
diff --git a/pandas/tests/dtypes/test_inference.py b/pandas/tests/dtypes/test_inference.py
index 375003e58c21a..8602813879368 100644
--- a/pandas/tests/dtypes/test_inference.py
+++ b/pandas/tests/dtypes/test_inference.py
@@ -113,6 +113,9 @@ def __len__(self) -> int:
     def __array__(self, t=None):
         return np.asarray(self._values, dtype=t)
 
+    def __getitem__(self, item):
+        return self._values[item]
+
     @property
     def ndim(self):
         return self._values.ndim
diff --git a/pandas/tests/util/test_assert_almost_equal.py b/pandas/tests/util/test_assert_almost_equal.py
index a86302f158005..bc35f1af0c683 100644
--- a/pandas/tests/util/test_assert_almost_equal.py
+++ b/pandas/tests/util/test_assert_almost_equal.py
@@ -10,6 +10,7 @@
     Timestamp,
 )
 import pandas._testing as tm
+from pandas.tests.dtypes.test_inference import MockNumpyLikeArray
 
 
 def _assert_almost_equal_both(a, b, **kwargs):
@@ -454,6 +455,19 @@ def test_assert_almost_equal_shape_mismatch_override():
         tm.assert_almost_equal(np.array([1, 2]), np.array([3, 4, 5]), obj="Index")
 
 
+@pytest.mark.parametrize(
+    "obj",
+    [
+        MockNumpyLikeArray(np.ndarray((2,) * 1)),
+        MockNumpyLikeArray(np.array([])),
+        MockNumpyLikeArray(np.array(2)),
+    ],
+    ids=["duck-ndarray-1d", "duck-ndarray-1d-empty", "duck-ndarray-0d"],
+)
+def test_assert_almost_equal_not_iterable(obj):
+    tm.assert_almost_equal(obj, obj)
+
+
 def test_assert_almost_equal_unicode():
     # see gh-20503
     msg = """numpy array are different

From 9fd93b85601ad7a4ec2de91acd3663778fb5c78e Mon Sep 17 00:00:00 2001
From: Kevin <swimmingkevin2012@gmail.com>
Date: Thu, 24 Aug 2023 15:30:20 -0700
Subject: [PATCH 2/3] mmend

---
 example                  | Bin 0 -> 7032 bytes
 pandas/_libs/testing.pyx |   1 +
 2 files changed, 1 insertion(+)
 create mode 100644 example

diff --git a/example b/example
new file mode 100644
index 0000000000000000000000000000000000000000..442ae1a5f1591896b6ccf13a4c9948bec17a6158
GIT binary patch
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diff --git a/pandas/_libs/testing.pyx b/pandas/_libs/testing.pyx
index ea01e55792a67..e2b56128a00b6 100644
--- a/pandas/_libs/testing.pyx
+++ b/pandas/_libs/testing.pyx
@@ -24,6 +24,7 @@ from pandas.core.dtypes.missing import array_equivalent
 
 
 cdef bint isiterable(obj):
+    # GH#54507
     if hasattr(obj, "__iter__"):
         try:
             iter(obj)

From 23b305f24a398543cecb3bafe4d6466275bc8b35 Mon Sep 17 00:00:00 2001
From: Kevin <swimmingkevin2012@gmail.com>
Date: Fri, 25 Aug 2023 11:55:48 -0700
Subject: [PATCH 3/3] mmend

---
 pandas/tests/util/test_assert_almost_equal.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/pandas/tests/util/test_assert_almost_equal.py b/pandas/tests/util/test_assert_almost_equal.py
index bc35f1af0c683..6341fc57dba20 100644
--- a/pandas/tests/util/test_assert_almost_equal.py
+++ b/pandas/tests/util/test_assert_almost_equal.py
@@ -458,11 +458,9 @@ def test_assert_almost_equal_shape_mismatch_override():
 @pytest.mark.parametrize(
     "obj",
     [
-        MockNumpyLikeArray(np.ndarray((2,) * 1)),
-        MockNumpyLikeArray(np.array([])),
         MockNumpyLikeArray(np.array(2)),
     ],
-    ids=["duck-ndarray-1d", "duck-ndarray-1d-empty", "duck-ndarray-0d"],
+    ids=["duck-ndarray-0d"],
 )
 def test_assert_almost_equal_not_iterable(obj):
     tm.assert_almost_equal(obj, obj)