Fixed database typo and removed unnecessary class identifier.

venv/Lib/site-packages/PIL/ImageSequence.py

@@ -0,0 +1,75 @@
+#
+# 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.
+#
+
+##
+
+
+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):
+        if not hasattr(im, "seek"):
+            raise AttributeError("im must have seek method")
+        self.im = im
+        self.position = getattr(self.im, "_min_frame", 0)
+
+    def __getitem__(self, ix):
+        try:
+            self.im.seek(ix)
+            return self.im
+        except EOFError as e:
+            raise IndexError from e  # end of sequence
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        try:
+            self.im.seek(self.position)
+            self.position += 1
+            return self.im
+        except EOFError as e:
+            raise StopIteration from e
+
+
+def all_frames(im, func=None):
+    """
+    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