Jun 24, 2025 · Jun 22, 2025
diff --git a/lib/matplotlib/animation.py b/lib/matplotlib/animation.py
 import abc
 import base64
 import collections
 import contextlib
 from io import BytesIO, TextIOWrapper
 import itertools
        self._cache_frame_data = cache_frame_data

        # Needs to be initialized so the draw functions work without checking
        self._save_seq =[]
        self._save_seq =collections.deque([], self._save_count)

        super().__init__(fig, **kwargs)

        # Need to reset the saved seq, since right now it will contain data
        # for a single frame from init, which is not what we want.
        self._save_seq = []
        self._save_seq.clear()

    def new_frame_seq(self):
        # Use the generating function to generate a new frame sequence
        if self._save_seq:
            # While iterating we are going to update _save_seq
            # so make a copy to safely iterate over
            self._old_saved_seq = list(self._save_seq)
            return iter(self._old_saved_seq)
            return iter([*self._save_seq])
        else:
            if self._save_count is None:
                frame_seq = self.new_frame_seq()
                                       'return a sequence of Artist objects.')
                for a in self._drawn_artists:
                    a.set_animated(self._blit)
        self._save_seq = []
        self._save_seq.clear()

    def _draw_frame(self, framedata):
        if self._cache_frame_data:
            # Save the data for potential saving of movies.
            self._save_seq.append(framedata)
            self._save_seq = self._save_seq[-self._save_count:]

        # Call the func with framedata and args. If blitting is desired,
        # func needs to return a sequence of any artists that were modified.
Original file line number	Diff line number	Diff line change
		@@ -1,5 +1,6 @@
		import abc
		import base64
		import collections
		import contextlib
		from io import BytesIO, TextIOWrapper
		import itertools
Expand DownExpand Up		@@ -1708,13 +1709,13 @@
		self._cache_frame_data = cache_frame_data

		# Needs to be initialized so the draw functions work without checking
		self._save_seq =[]
		self._save_seq =collections.deque([], self._save_count)

		super().__init__(fig, **kwargs)

		# Need to reset the saved seq, since right now it will contain data
		# for a single frame from init, which is not what we want.
		self._save_seq = []
		self._save_seq.clear()

		def new_frame_seq(self):
		# Use the generating function to generate a new frame sequence
Expand All		@@ -1727,8 +1728,7 @@
		if self._save_seq:
		# While iterating we are going to update _save_seq
		# so make a copy to safely iterate over
		self._old_saved_seq = list(self._save_seq)
		return iter(self._old_saved_seq)
		return iter([*self._save_seq])
Check warning on line 1731 in lib/matplotlib/animation.py View check run for this annotation Codecov/ codecov/patch lib/matplotlib/animation.py#L1731 `Added line #L1731 was not covered by tests`
		else:
		if self._save_count is None:
		frame_seq = self.new_frame_seq()
Expand DownExpand Up		@@ -1773,13 +1773,12 @@
		'return a sequence of Artist objects.')
		for a in self._drawn_artists:
		a.set_animated(self._blit)
		self._save_seq = []
		self._save_seq.clear()

		def _draw_frame(self, framedata):
		if self._cache_frame_data:
		# Save the data for potential saving of movies.
		self._save_seq.append(framedata)
		self._save_seq = self._save_seq[-self._save_count:]

		# Call the func with framedata and args. If blitting is desired,
		# func needs to return a sequence of any artists that were modified.
Expand Down