Fix _remove_blacklisted_style_params bug

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Doeme · Apr 27, 2020 · 23470a8 · 23470a8
1 parent 002b27e
commit 23470a8
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/lib/matplotlib/style/core.py b/lib/matplotlib/style/core.py
@@ -44,14 +44,14 @@
 
 def _remove_blacklisted_style_params(d, warn=True):
     o = {}
-    for key, val in d.items():
+    for key in d:  # prevent triggering RcParams.__getitem__('backend')
         if key in STYLE_BLACKLIST:
             if warn:
                 cbook._warn_external(
                     "Style includes a parameter, '{0}', that is not related "
                     "to style.  Ignoring".format(key))
         else:
-            o[key] = val
+            o[key] = d[key]
     return o