Image channel is used when converting PA with an RGBA palette

python-pillow · Oct 13, 2022 · a4b2572 · a4b2572
1 parent 44510d2
commit a4b2572
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/PIL/Image.py b/src/PIL/Image.py
@@ -880,7 +880,7 @@ def convert(
         and the palette can be represented without a palette.
 
         The current version supports all possible conversions between
-        "L", "RGB" and "CMYK." The ``matrix`` argument only supports "L"
+        "L", "RGB" and "CMYK". The ``matrix`` argument only supports "L"
         and "RGB".
 
         When translating a color image to greyscale (mode "L"),
@@ -899,6 +899,9 @@ def convert(
         this passes the operation to :py:meth:`~PIL.Image.Image.quantize`,
         and ``dither`` and ``palette`` are ignored.
 
+        When converting from "PA", if an "RGBA" palette is present, the alpha
+        channel from the image will be used instead of the values from the palette.
+
         :param mode: The requested mode. See: :ref:`concept-modes`.
         :param matrix: An optional conversion matrix.  If given, this
            should be 4- or 12-tuple containing floating point values.