Include filename in state

Author: radarhere

Tests/test_pickle.py

@@ -81,6 +81,7 @@ def test_pickle_jpeg() -> None:
         unpickled_image = pickle.loads(pickle.dumps(image))
 
     # Assert
+    assert unpickled_image.filename == "Tests/images/hopper.jpg"
     assert len(unpickled_image.layer) == 3
     assert unpickled_image.layers == 3
 

src/PIL/ImageFile.py

@@ -252,8 +252,12 @@ def get_format_mimetype(self) -> str | None:
             return Image.MIME.get(self.format.upper())
         return None
 
+    def __getstate__(self) -> list[Any]:
+        return super().__getstate__() + [self.filename]
+
     def __setstate__(self, state: list[Any]) -> None:
         self.tile = []
+        self.filename = state[5]
         super().__setstate__(state)
 
     def verify(self) -> None:

src/PIL/JpegImagePlugin.py

@@ -403,8 +403,8 @@ def __getstate__(self) -> list[Any]:
         return super().__getstate__() + [self.layers, self.layer]
 
     def __setstate__(self, state: list[Any]) -> None:
+        self.layers, self.layer = state[6:]
         super().__setstate__(state)
-        self.layers, self.layer = state[5:]
 
     def load_read(self, read_bytes: int) -> bytes:
         """