From f5314ccda2701847961524650321f92ad76bce45 Mon Sep 17 00:00:00 2001
From: Dan Redding <125183946+dangotbanned@users.noreply.github.com>
Date: Sat, 8 Feb 2025 17:22:37 +0000
Subject: [PATCH] fix(typing): resolve remaining `utils.py` warnings (#1968)

Adds `_is_range_index` to fix 6 warnings
---
 narwhals/utils.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/narwhals/utils.py b/narwhals/utils.py
index a4606eedb..33aefc16d 100644
--- a/narwhals/utils.py
+++ b/narwhals/utils.py
@@ -766,12 +766,16 @@ def maybe_reset_index(obj: FrameOrSeriesT) -> FrameOrSeriesT:
     return obj_any  # type: ignore[no-any-return]
 
 
+def _is_range_index(obj: Any, native_namespace: Any) -> TypeIs[pd.RangeIndex]:
+    return isinstance(obj, native_namespace.RangeIndex)
+
+
 def _has_default_index(
     native_frame_or_series: pd.Series | pd.DataFrame, native_namespace: Any
 ) -> bool:
     index = native_frame_or_series.index
     return (
-        isinstance(index, native_namespace.RangeIndex)
+        _is_range_index(index, native_namespace)
         and index.start == 0
         and index.stop == len(index)
         and index.step == 1