Merge pull request #15298 from meeseeksmachine/auto-backport-of-pr-15296-on-v3.1.x

tacaswell · web-flow · commit 4fb90e1353c0 · 2019-09-19T01:06:39.000+02:00
Backport PR #15296 on branch v3.1.x (Fix typo/bug from 18cecf7)
diff --git a/lib/matplotlib/rcsetup.py b/lib/matplotlib/rcsetup.py
@@ -471,7 +471,7 @@ def validate_fontweight(s):
     try:
         return int(s)
     except (ValueError, TypeError):
-        raise ValueError(f'{s} is not a valid font weight. %s')
+        raise ValueError(f'{s} is not a valid font weight.')
 
 
 def validate_font_properties(s):
