Setting imshow(animated=True) still show does not show an image (#30052)

alphanoobie · timhoffm · rcomer · web-flow · commit 08236aed74f1 · 2025-12-08T18:10:42.000+01:00
---------

Co-authored-by: Tim Hoffmann &lt;2836374+timhoffm@users.noreply.github.com&gt;
Co-authored-by: Ruth Comer &lt;10599679+rcomer@users.noreply.github.com&gt;
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -3206,7 +3206,7 @@ def draw(self, renderer):
         if not self.get_figure(root=True).canvas.is_saving():
             artists = [
                 a for a in artists
-                if not a.get_animated() or isinstance(a, mimage.AxesImage)]
+                if not a.get_animated()]
         artists = sorted(artists, key=attrgetter('zorder'))
 
         # rasterize artists with negative zorder
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -11,6 +11,7 @@
 import re
 import sys
 from types import SimpleNamespace
+import unittest.mock
 
 import dateutil.tz
 
@@ -45,7 +46,6 @@
 from matplotlib.testing.decorators import (
     image_comparison, check_figures_equal, remove_ticks_and_titles)
 from matplotlib.testing._markers import needs_usetex
-
 # Note: Some test cases are run twice: once normally and once with labeled data
 #       These two must be defined in the same test function or need to have
 #       different baseline images to prevent race conditions when pytest runs
@@ -10018,3 +10018,20 @@ def test_pie_all_zeros():
     fig, ax = plt.subplots()
     with pytest.raises(ValueError, match="All wedge sizes are zero"):
         ax.pie([0, 0], labels=["A", "B"])
+
+
+def test_animated_artists_not_drawn_by_default():
+    fig, (ax1, ax2) = plt.subplots(ncols=2)
+
+    imdata = np.random.random((20, 20))
+    lndata = imdata[0]
+
+    im = ax1.imshow(imdata, animated=True)
+    (ln,) = ax2.plot(lndata, animated=True)
+
+    with (unittest.mock.patch.object(im, "draw", name="im.draw") as mocked_im_draw,
+          unittest.mock.patch.object(ln, "draw", name="ln.draw") as mocked_ln_draw):
+        fig.draw_without_rendering()
+
+    mocked_im_draw.assert_not_called()
+    mocked_ln_draw.assert_not_called()
