Import matplotlib

commit_hash:d59c2338025ef8fd1e1f961ed9d8d5fd52d0bd96

1 files changed, 86 insertions, 0 deletions

diff --git a/contrib/python/Pillow/py3/PIL/ImageSequence.py b/contrib/python/Pillow/py3/PIL/ImageSequence.py
new file mode 100644
index 00000000000..2c185027630
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+++ b/contrib/python/Pillow/py3/PIL/ImageSequence.py
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+#
+# The Python Imaging Library.
+# $Id$
+#
+# sequence support classes
+#
+# history:
+# 1997-02-20 fl     Created
+#
+# Copyright (c) 1997 by Secret Labs AB.
+# Copyright (c) 1997 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+##
+from __future__ import annotations
+
+from typing import Callable
+
+from . import Image
+
+
+class Iterator:
+    """
+    This class implements an iterator object that can be used to loop
+    over an image sequence.
+
+    You can use the ``[]`` operator to access elements by index. This operator
+    will raise an :py:exc:`IndexError` if you try to access a nonexistent
+    frame.
+
+    :param im: An image object.
+    """
+
+    def __init__(self, im: Image.Image):
+        if not hasattr(im, "seek"):
+            msg = "im must have seek method"
+            raise AttributeError(msg)
+        self.im = im
+        self.position = getattr(self.im, "_min_frame", 0)
+
+    def __getitem__(self, ix: int) -> Image.Image:
+        try:
+            self.im.seek(ix)
+            return self.im
+        except EOFError as e:
+            msg = "end of sequence"
+            raise IndexError(msg) from e
+
+    def __iter__(self) -> Iterator:
+        return self
+
+    def __next__(self) -> Image.Image:
+        try:
+            self.im.seek(self.position)
+            self.position += 1
+            return self.im
+        except EOFError as e:
+            msg = "end of sequence"
+            raise StopIteration(msg) from e
+
+
+def all_frames(
+    im: Image.Image | list[Image.Image],
+    func: Callable[[Image.Image], Image.Image] | None = None,
+) -> list[Image.Image]:
+    """
+    Applies a given function to all frames in an image or a list of images.
+    The frames are returned as a list of separate images.
+
+    :param im: An image, or a list of images.
+    :param func: The function to apply to all of the image frames.
+    :returns: A list of images.
+    """
+    if not isinstance(im, list):
+        im = [im]
+
+    ims = []
+    for imSequence in im:
+        current = imSequence.tell()
+
+        ims += [im_frame.copy() for im_frame in Iterator(imSequence)]
+
+        imSequence.seek(current)
+    return [func(im) for im in ims] if func else ims