Merge pull request #16966 from anntzer/animfallback

QuLogic · web-flow · commit 84e872d0f47b · 2020-03-30T18:20:11.000-04:00
Fix animation writer fallback.
diff --git a/lib/matplotlib/animation.py b/lib/matplotlib/animation.py
@@ -1090,7 +1090,7 @@ def func(current_frame: int, total_frames: int) -> Any
             if writers.is_available(writer):
                 writer = writers[writer](fps, **writer_kwargs)
             else:
-                alt_writer = next(writers, None)
+                alt_writer = next(iter(writers), None)
                 if alt_writer is None:
                     raise ValueError("Cannot save animation: no writers are "
                                      "available. Please install ffmpeg to "
