Merge pull request #15299 from meeseeksmachine/auto-backport-of-pr-15296-on-v3.2.x

tacaswell · web-flow · commit 9461967b995c · 2019-09-24T14:59:27.000-04:00
Backport PR #15296 on branch v3.2.x (Fix typo/bug from 18cecf7)
diff --git a/lib/matplotlib/rcsetup.py b/lib/matplotlib/rcsetup.py
@@ -411,7 +411,7 @@ 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):
