BUG: remove usage of _constructor._get_axis_number (fix when _constructor properties return callables)

pandas/_testing/__init__.py

@@ -803,23 +803,23 @@ class SubclassedSeries(Series):
 
     @property
     def _constructor(self):
-        return SubclassedSeries
+        return lambda *args, **kwargs: SubclassedSeries(*args, **kwargs)
 
     @property
     def _constructor_expanddim(self):
-        return SubclassedDataFrame
+        return lambda *args, **kwargs: SubclassedDataFrame(*args, **kwargs)
 
 
 class SubclassedDataFrame(DataFrame):
     _metadata = ["testattr"]
 
     @property
     def _constructor(self):
-        return SubclassedDataFrame
+        return lambda *args, **kwargs: SubclassedDataFrame(*args, **kwargs)
 
     @property
     def _constructor_sliced(self):
-        return SubclassedSeries
+        return lambda *args, **kwargs: SubclassedSeries(*args, **kwargs)
 
 
 class SubclassedCategorical(Categorical):

pandas/core/generic.py

@@ -6608,8 +6608,10 @@ def replace(
 
             if isinstance(to_replace, (tuple, list)):
                 if isinstance(self, ABCDataFrame):
+                    from pandas import Series
+
                     result = self.apply(
-                        self._constructor_sliced._replace_single,
+                        Series._replace_single,
                         args=(to_replace, method, inplace, limit),
                     )
                     if inplace:

pandas/core/groupby/groupby.py

@@ -1733,7 +1733,7 @@ def _cumcount_array(self, ascending: bool = True) -> np.ndarray:
 
     @final
     @property
-    def _obj_1d_constructor(self) -> type[Series]:
+    def _obj_1d_constructor(self) -> Callable:
         # GH28330 preserve subclassed Series/DataFrames
         if isinstance(self.obj, DataFrame):
             return self.obj._constructor_sliced

pandas/core/reshape/concat.py

@@ -6,6 +6,7 @@
 from collections import abc
 from typing import (
     TYPE_CHECKING,
+    Callable,
     Hashable,
     Iterable,
     Literal,
@@ -467,7 +468,9 @@ def __init__(
 
         # Standardize axis parameter to int
         if isinstance(sample, ABCSeries):
-            axis = sample._constructor_expanddim._get_axis_number(axis)
+            from pandas import DataFrame
+
+            axis = DataFrame._get_axis_number(axis)
         else:
             axis = sample._get_axis_number(axis)
 
@@ -539,7 +542,7 @@ def __init__(
         self.new_axes = self._get_new_axes()
 
     def get_result(self):
-        cons: type[DataFrame | Series]
+        cons: Callable
         sample: DataFrame | Series
 
         # series only

pandas/tests/frame/test_subclass.py

@@ -737,3 +737,11 @@ def test_equals_subclass(self):
         df2 = tm.SubclassedDataFrame({"a": [1, 2, 3]})
         assert df1.equals(df2)
         assert df2.equals(df1)
+
+    def test_replace_list_method(self):
+        # https://github.com/pandas-dev/pandas/pull/46018
+        df = tm.SubclassedDataFrame({"A": [0, 1, 2]})
+        result = df.replace([1, 2], method="ffill")
+        expected = tm.SubclassedDataFrame({"A": [0, 0, 0]})
+        assert isinstance(result, tm.SubclassedDataFrame)
+        tm.assert_frame_equal(result, expected)