matplotlib
diff --git a/‎lib/matplotlib/animation.py
Copy file name to clipboardExpand all lines: lib/matplotlib/animation.py
+6-1Lines changed: 6 additions & 1 deletion b/‎lib/matplotlib/animation.py
Copy file name to clipboardExpand all lines: lib/matplotlib/animation.py
+6-1Lines changed: 6 additions & 1 deletion
@@ -167,7 +167,12 @@ def __getitem__(self, name):
         self.ensure_not_dirty()
         if not self.avail:
             raise RuntimeError("No MovieWriters available!")
-        return self.avail[name]
+        try:
+            return self.avail[name]
+        except KeyError:
+            raise RuntimeError(
+                'Requested MovieWriter ({}) not available'.format(name))
+
 
 writers = MovieWriterRegistry()