Suppress some more rc deprecation warnings.

anntzer · anntzer · commit a76eabad4db4 · 2018-06-07T08:30:11.000+02:00
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
@@ -1220,21 +1220,33 @@ def rcdefaults():
         Use a specific style file.  Call ``style.use('default')`` to restore
         the default style.
     """
-    rcParams.clear()
-    rcParams.update(rcParamsDefault)
+    # Deprecation warnings were already handled when creating rcParamsDefault,
+    # no need to reemit them here.
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", mplDeprecation)
+        rcParams.clear()
+        rcParams.update(rcParamsDefault)
 
 
 def rc_file_defaults():
     """Restore the rc params from the original rc file loaded by Matplotlib.
     """
-    rcParams.update(rcParamsOrig)
+    # Deprecation warnings were already handled when creating rcParamsOrig, no
+    # need to reemit them here.
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", mplDeprecation)
+        rcParams.update(rcParamsOrig)
 
 
 def rc_file(fname):
     """
     Update rc params from file.
     """
-    rcParams.update(rc_params_from_file(fname))
+    # Deprecation warnings were already handled in rc_params_from_file, no need
+    # to reemit them here.
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", mplDeprecation)
+        rcParams.update(rc_params_from_file(fname))
 
 
 class rc_context:
