updates

Backend/venv/lib/python3.12/site-packages/PIL/PixarImagePlugin.py

@@ -18,6 +18,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 from . import Image, ImageFile
 from ._binary import i16le as i16
@@ -26,8 +27,8 @@ from ._binary import i16le as i16
 # helpers
 
 
-def _accept(prefix):
-    return prefix[:4] == b"\200\350\000\000"
+def _accept(prefix: bytes) -> bool:
+    return prefix.startswith(b"\200\350\000\000")
 
 
 ##
@@ -38,8 +39,10 @@ class PixarImageFile(ImageFile.ImageFile):
     format = "PIXAR"
     format_description = "PIXAR raster image"
 
-    def _open(self):
+    def _open(self) -> None:
         # assuming a 4-byte magic label
+        assert self.fp is not None
+
         s = self.fp.read(4)
         if not _accept(s):
             msg = "not a PIXAR file"
@@ -58,7 +61,7 @@ class PixarImageFile(ImageFile.ImageFile):
         # FIXME: to be continued...
 
         # create tile descriptor (assuming "dumped")
-        self.tile = [("raw", (0, 0) + self.size, 1024, (self.mode, 0, 1))]
+        self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 1024, self.mode)]
 
 
 #