From d876991f6b27553289e0139f51a830f1c01f9778 Mon Sep 17 00:00:00 2001
From: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
Date: Fri, 21 Feb 2025 12:23:09 -0800
Subject: [PATCH 1/3] Short circuit Index.equal if compared Index isn't same
 type

---
 python/cudf/cudf/core/column/column.py | 2 +-
 python/cudf/cudf/core/index.py         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/python/cudf/cudf/core/column/column.py b/python/cudf/cudf/core/column/column.py
index 06dc4058115..67a0aa7a781 100644
--- a/python/cudf/cudf/core/column/column.py
+++ b/python/cudf/cudf/core/column/column.py
@@ -713,7 +713,7 @@ def all(self, skipna: bool = True) -> bool:
         # is empty.
         if self.null_count == self.size:
             return True
-        return self.reduce("all")
+        return bool(self.reduce("all"))
 
     def any(self, skipna: bool = True) -> bool:
         # Early exit for fast cases.
diff --git a/python/cudf/cudf/core/index.py b/python/cudf/cudf/core/index.py
index 8587bff2e32..b984079bf48 100644
--- a/python/cudf/cudf/core/index.py
+++ b/python/cudf/cudf/core/index.py
@@ -1273,7 +1273,7 @@ def is_unique(self) -> bool:
 
     @_performance_tracking
     def equals(self, other) -> bool:
-        if not isinstance(other, BaseIndex) or len(self) != len(other):
+        if not (isinstance(other, type(self)) and len(self) == len(other)):
             return False
 
         check_dtypes = False

From a157b60167266e8828fb4f101a24fead5591f5d9 Mon Sep 17 00:00:00 2001
From: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
Date: Fri, 21 Feb 2025 15:46:01 -0800
Subject: [PATCH 2/3] make exception for categorical

---
 python/cudf/cudf/core/index.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/python/cudf/cudf/core/index.py b/python/cudf/cudf/core/index.py
index b984079bf48..f52bd0697bf 100644
--- a/python/cudf/cudf/core/index.py
+++ b/python/cudf/cudf/core/index.py
@@ -1273,7 +1273,7 @@ def is_unique(self) -> bool:
 
     @_performance_tracking
     def equals(self, other) -> bool:
-        if not (isinstance(other, type(self)) and len(self) == len(other)):
+        if not isinstance(other, BaseIndex) or len(self) != len(other):
             return False
 
         check_dtypes = False
@@ -1286,6 +1286,12 @@ def equals(self, other) -> bool:
         elif other_is_categorical and not self_is_categorical:
             self = self.astype(other.dtype)
             check_dtypes = True
+        elif (
+            not self_is_categorical
+            and not other_is_categorical
+            and not isinstance(self, type(other))
+        ):
+            return False
 
         try:
             return self._column.equals(

From e8544f28bc33ba05447e4d128f4381261440ceda Mon Sep 17 00:00:00 2001
From: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
Date: Fri, 21 Feb 2025 15:54:18 -0800
Subject: [PATCH 3/3] Add exception for RangeINdex

---
 python/cudf/cudf/core/index.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/python/cudf/cudf/core/index.py b/python/cudf/cudf/core/index.py
index f52bd0697bf..a77c4816450 100644
--- a/python/cudf/cudf/core/index.py
+++ b/python/cudf/cudf/core/index.py
@@ -1289,8 +1289,11 @@ def equals(self, other) -> bool:
         elif (
             not self_is_categorical
             and not other_is_categorical
+            and not isinstance(other, RangeIndex)
             and not isinstance(self, type(other))
         ):
+            # Can compare Index to CategoricalIndex or RangeIndex
+            # Other comparisons are invalid
             return False
 
         try: