perf: avoid unnecessary reset_index in join (#481)

narwhals-dev · Jul 10, 2024 · 9042400 · 9042400
1 parent f7c3890
commit 9042400
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/narwhals/_pandas_like/dataframe.py b/narwhals/_pandas_like/dataframe.py
@@ -365,7 +365,6 @@ def join(
                 )
                 .loc[lambda t: t[indicator_token] == "left_only"]
                 .drop(columns=[indicator_token])
-                .reset_index(drop=True)
             )
 
         if how == "semi":
@@ -382,7 +381,7 @@ def join(
                     how="inner",
                     left_on=left_on,
                     right_on=left_on,
-                ).reset_index(drop=True)
+                )
             )
 
         return self._from_native_dataframe(