From 1e8cdf531b1b5c4a288b851e2b33f827c425c778 Mon Sep 17 00:00:00 2001
From: Yay295 <Yay295@gmail.com>
Date: Wed, 26 Jun 2024 09:51:16 -0500
Subject: [PATCH] add check for deprecated rawmodes when creating an
 ImagePalette

---
 Tests/test_imagepalette.py |  6 ++++++
 src/PIL/ImagePalette.py    | 10 ++++++++++
 2 files changed, 16 insertions(+)

diff --git a/Tests/test_imagepalette.py b/Tests/test_imagepalette.py
index 6cf0079dda7..0317f77de7a 100644
--- a/Tests/test_imagepalette.py
+++ b/Tests/test_imagepalette.py
@@ -158,6 +158,12 @@ def test_rawmode_valueerrors(tmp_path: Path) -> None:
         palette.save(f)
 
 
+@pytest.mark.parametrize("rawmode", Image._DEPRECATED_RAWMODES)
+def test_rawmode_deprecated(rawmode: str) -> None:
+    with pytest.warns(DeprecationWarning):
+        ImagePalette.raw(rawmode, b"")
+
+
 def test_getdata() -> None:
     # Arrange
     data_in = list(range(256)) * 3
diff --git a/src/PIL/ImagePalette.py b/src/PIL/ImagePalette.py
index ed38285dc28..7466708a17b 100644
--- a/src/PIL/ImagePalette.py
+++ b/src/PIL/ImagePalette.py
@@ -208,6 +208,16 @@ def save(self, fp: str | IO[str]) -> None:
 
 
 def raw(rawmode, data: Sequence[int] | bytes | bytearray) -> ImagePalette:
+    from . import Image
+    from ._deprecate import deprecate
+
+    if rawmode in Image._DEPRECATED_RAWMODES:
+        deprecate(
+            f"rawmode {rawmode}",
+            12,
+            replacement=f"rawmode {Image._DEPRECATED_RAWMODES[rawmode]}",
+        )
+
     palette = ImagePalette()
     palette.rawmode = rawmode
     palette.palette = data