From 920aa7e5bc43b0d65b20c5504ba1f6042b0350c1 Mon Sep 17 00:00:00 2001
From: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date: Mon, 3 Jul 2023 19:02:45 +0200
Subject: [PATCH] DEPR: start with Deprecation instead of FutureWarning for
 NDFrame._data

---
 pandas/core/generic.py               | 2 +-
 pandas/tests/frame/test_api.py       | 2 +-
 pandas/tests/generic/test_generic.py | 2 +-
 pandas/tests/series/test_api.py      | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/pandas/core/generic.py b/pandas/core/generic.py
index b806ddbaa89ba..f049e9d479b26 100644
--- a/pandas/core/generic.py
+++ b/pandas/core/generic.py
@@ -506,7 +506,7 @@ def _data(self):
         warnings.warn(
             f"{type(self).__name__}._data is deprecated and will be removed in "
             "a future version. Use public APIs instead.",
-            FutureWarning,
+            DeprecationWarning,
             stacklevel=find_stack_level(),
         )
         return self._mgr
diff --git a/pandas/tests/frame/test_api.py b/pandas/tests/frame/test_api.py
index e0d9d6c281fd5..7cf1c56d9342e 100644
--- a/pandas/tests/frame/test_api.py
+++ b/pandas/tests/frame/test_api.py
@@ -379,6 +379,6 @@ def test_inspect_getmembers(self):
         df = DataFrame()
         msg = "DataFrame._data is deprecated"
         with tm.assert_produces_warning(
-            FutureWarning, match=msg, check_stacklevel=False
+            DeprecationWarning, match=msg, check_stacklevel=False
         ):
             inspect.getmembers(df)
diff --git a/pandas/tests/generic/test_generic.py b/pandas/tests/generic/test_generic.py
index acc1a8c2e1d05..6226f97c73f92 100644
--- a/pandas/tests/generic/test_generic.py
+++ b/pandas/tests/generic/test_generic.py
@@ -307,7 +307,7 @@ def test_copy_and_deepcopy(self, frame_or_series, shape, func):
     def test_data_deprecated(self, frame_or_series):
         obj = frame_or_series()
         msg = "(Series|DataFrame)._data is deprecated"
-        with tm.assert_produces_warning(FutureWarning, match=msg):
+        with tm.assert_produces_warning(DeprecationWarning, match=msg):
             mgr = obj._data
         assert mgr is obj._mgr
 
diff --git a/pandas/tests/series/test_api.py b/pandas/tests/series/test_api.py
index e4e276af121f9..7d70206585be4 100644
--- a/pandas/tests/series/test_api.py
+++ b/pandas/tests/series/test_api.py
@@ -172,7 +172,7 @@ def test_inspect_getmembers(self):
         ser = Series(dtype=object)
         msg = "Series._data is deprecated"
         with tm.assert_produces_warning(
-            FutureWarning, match=msg, check_stacklevel=False
+            DeprecationWarning, match=msg, check_stacklevel=False
         ):
             inspect.getmembers(ser)