Merge pull request #6753 from anntzer/dont-warn-on-empty-legend

QuLogic · web-flow · commit 45dbc9bc7a15 · 2016-09-30T17:20:07.000-04:00
Don't warn when legend() finds no labels.
diff --git a/doc/api/api_changes/2016-09-28-AL_emptylegend.rst b/doc/api/api_changes/2016-09-28-AL_emptylegend.rst
@@ -0,0 +1,5 @@
+Removal of warning on empty legends
+```````````````````````````````````
+
+``plt.legend`` used to issue a warning when no labeled artist could be found.
+This warning has been removed.
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -547,8 +547,6 @@ def legend(self, *args, **kwargs):
         elif len(args) == 0:
             handles, labels = self.get_legend_handles_labels(handlers)
             if not handles:
-                warnings.warn("No labelled objects found. "
-                              "Use label='...' kwarg on individual plots.")
                 return None
 
         # One argument. User defined labels - automatic handle detection.
