Preserve_dtype if argument is passed in, else don't preserve

Kei · Kei · commit e1ccef68b6a0 · 2024-05-07T12:53:13.000+08:00
diff --git a/pandas/core/groupby/ops.py b/pandas/core/groupby/ops.py
@@ -921,7 +921,7 @@ def agg_series(
 
         if isinstance(obj._values, ArrowExtensionArray):
             out = maybe_cast_pointwise_result(
-                npvalues, obj.dtype, numeric_only=True, same_dtype=False
+                npvalues, obj.dtype, numeric_only=True, same_dtype=preserve_dtype
             )
             import pyarrow as pa
 

Original file line number	Diff line number	Diff line change
`@@ -921,7 +921,7 @@ def agg_series(`
`921`	`921`
`922`	`922`	`if isinstance(obj._values, ArrowExtensionArray):`
`923`	`923`	`out = maybe_cast_pointwise_result(`
`924`		`- npvalues, obj.dtype, numeric_only=True, same_dtype=False`
	`924`	`+ npvalues, obj.dtype, numeric_only=True, same_dtype=preserve_dtype`
`925`	`925`	`)`
`926`	`926`	`import pyarrow as pa`
`927`	`927`