Remove ._data

pandas/core/generic.py

@@ -486,23 +486,6 @@ def _constructor(self) -> Callable[..., Self]:
         """
         raise AbstractMethodError(self)
 
-    # ----------------------------------------------------------------------
-    # Internals
-
-    @final
-    @property
-    def _data(self):
-        # GH#33054 retained because some downstream packages uses this,
-        #  e.g. fastparquet
-        # GH#33333
-        warnings.warn(
-            f"{type(self).__name__}._data is deprecated and will be removed in "
-            "a future version. Use public APIs instead.",
-            DeprecationWarning,
-            stacklevel=find_stack_level(),
-        )
-        return self._mgr
-
     # ----------------------------------------------------------------------
     # Axis
     _AXIS_ORDERS: list[Literal["index", "columns"]]

pandas/tests/frame/test_api.py

@@ -376,8 +376,4 @@ def test_inspect_getmembers(self):
         # GH38740
         pytest.importorskip("jinja2")
         df = DataFrame()
-        msg = "DataFrame._data is deprecated"
-        with tm.assert_produces_warning(
-            DeprecationWarning, match=msg, check_stacklevel=False
-        ):
-            inspect.getmembers(df)
+        inspect.getmembers(df)

pandas/tests/generic/test_generic.py

@@ -303,13 +303,6 @@ def test_copy_and_deepcopy(self, frame_or_series, shape, func):
         assert obj_copy is not obj
         tm.assert_equal(obj_copy, obj)
 
-    def test_data_deprecated(self, frame_or_series):
-        obj = frame_or_series()
-        msg = "(Series|DataFrame)._data is deprecated"
-        with tm.assert_produces_warning(DeprecationWarning, match=msg):
-            mgr = obj._data
-        assert mgr is obj._mgr
-
 
 class TestNDFrame:
     # tests that don't fit elsewhere

pandas/tests/series/test_api.py

@@ -164,11 +164,7 @@ def test_inspect_getmembers(self):
         # GH38782
         pytest.importorskip("jinja2")
         ser = Series(dtype=object)
-        msg = "Series._data is deprecated"
-        with tm.assert_produces_warning(
-            DeprecationWarning, match=msg, check_stacklevel=False
-        ):
-            inspect.getmembers(ser)
+        inspect.getmembers(ser)
 
     def test_unknown_attribute(self):
         # GH#9680