FIX: when calling use do not trigger auto-backend resolution

tacaswell · anntzer · commit 2c1f52c3dec9 · 2018-08-26T23:00:27.000+02:00
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
@@ -1345,7 +1345,7 @@ def use(arg, warn=True, force=False):
     name = validate_backend(arg)
 
     # if setting back to the same thing, do nothing
-    if (rcParams['backend'] == name):
+    if (dict.__getitem__(rcParams, 'backend') == name):
         pass
 
     # Check if we have already imported pyplot and triggered
