From 3ab7641fa9d1b5a3c33f0d30a27db6abb2bfaec7 Mon Sep 17 00:00:00 2001
From: Antony Lee <anntzer.lee@gmail.com>
Date: Mon, 30 Mar 2020 19:58:01 +0200
Subject: [PATCH] Fix animation writer fallback.

Getting the next available writer was done incorrectly.
---
 lib/matplotlib/animation.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/matplotlib/animation.py b/lib/matplotlib/animation.py
index 51e5a5582ec5..896b9d87bb82 100644
--- 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 "