From 99ae64f11bf1f205e85149ec3178c364bd33bdce Mon Sep 17 00:00:00 2001
From: Deepak Cherian <deepak@cherian.net>
Date: Thu, 1 May 2025 07:43:35 -0600
Subject: [PATCH] Add back getattr for ExtensionArrays

---
 doc/whats-new.rst                   | 16 ++++++++++++++--
 xarray/core/extension_array.py      |  5 ++++-
 xarray/tests/test_duck_array_ops.py |  5 +++++
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/doc/whats-new.rst b/doc/whats-new.rst
index 76fb5d42aa9..dc7165eda9a 100644
--- a/doc/whats-new.rst
+++ b/doc/whats-new.rst
@@ -16,11 +16,23 @@ What's New
 
     np.random.seed(123456)
 
-.. _whats-new.2025.04.0:
+.. _whats-new.2025.05.0:
 
-v2025.04.0 (unreleased)
+v2025.05.0 (unreleased)
 -----------------------
 
+Bug fixes
+~~~~~~~~~
+
+- Allow accessing arbitrary attributes on Pandas ExtensionArrays.
+  By `Deepak Cherian <https://github.com/dcherian`_.
+
+
+.. _whats-new.2025.04.0:
+
+v2025.04.0 (Apr 28, 2025)
+-------------------------
+
 This release brings bug fixes, better support for extension arrays including returning a
 :py:class:`pandas.IntervalArray` from ``groupby_bins``, and performance improvements.
 Thanks to the 24 contributors to this release:
diff --git a/xarray/core/extension_array.py b/xarray/core/extension_array.py
index 269016ddfd1..11855ee5755 100644
--- a/xarray/core/extension_array.py
+++ b/xarray/core/extension_array.py
@@ -2,7 +2,7 @@
 
 from collections.abc import Callable, Sequence
 from dataclasses import dataclass
-from typing import Generic, cast
+from typing import Any, Generic, cast
 
 import numpy as np
 import pandas as pd
@@ -142,3 +142,6 @@ def __array__(
             return np.asarray(self.array, dtype=dtype, copy=copy)
         else:
             return np.asarray(self.array, dtype=dtype)
+
+    def __getattr__(self, attr: str) -> Any:
+        return getattr(self.array, attr)
diff --git a/xarray/tests/test_duck_array_ops.py b/xarray/tests/test_duck_array_ops.py
index ff84041f8f1..3b75d3d6b2a 100644
--- a/xarray/tests/test_duck_array_ops.py
+++ b/xarray/tests/test_duck_array_ops.py
@@ -1094,3 +1094,8 @@ def test_extension_array_singleton_equality(categorical1):
 def test_extension_array_repr(int1):
     int_duck_array = PandasExtensionArray(int1)
     assert repr(int1) in repr(int_duck_array)
+
+
+def test_extension_array_attr():
+    array = pd.Categorical(["cat2", "cat1", "cat2", "cat3", "cat1"])
+    assert (array.categories == PandasExtensionArray(array).categories).all()