DOC: Added API entry, fixed Legend.get_tightbbox string

jklymak · jklymak · commit b6eba0cc1d2d · 2018-04-30T13:23:09.000-07:00
diff --git a/lib/matplotlib/legend.py b/lib/matplotlib/legend.py
@@ -972,7 +972,20 @@ def get_tightbbox(self, renderer):
         return self._legend_box.get_window_extent(renderer)
 
     def get_tightbbox(self, renderer):
-        'Return extent of the legend.'
+        """
+        Like `.Legend.get_window_extent`, but uses the box for the legend.
+
+        Parameters
+        ----------
+        renderer : `.RendererBase` instance
+            renderer that will be used to draw the figures (i.e.
+            ``fig.canvas.get_renderer()``)
+
+        Returns
+        -------
+        `.BboxBase` : containing the bounding box (in figure-relative
+            co-ordinates).
+        """
         return self._legend_box.get_window_extent(renderer)
 
     def get_frame_on(self):
