Add stem container documentation

dstansby · dstansby · commit 6804c913de44 · 2017-10-25T19:00:17.000+01:00
diff --git a/lib/matplotlib/container.py b/lib/matplotlib/container.py
@@ -123,8 +123,16 @@ def __init__(self, lines, has_xerr=False, has_yerr=False, **kwargs):
 
 
 class StemContainer(Container):
-
     def __init__(self, markerline_stemlines_baseline, **kwargs):
+        '''
+        Parameters
+        ----------
+        markerline_stemlines_baseline : tuple
+            Tuple of ``(markerline, stemlines, baseline)``.
+            ``markerline`` contains the `LineCollection` of the markers,
+            ``stemlines`` is a list of the `Line2D` of each line,
+            ``baseline`` is the `Line2D` of the baseline.
+        '''
         markerline, stemlines, baseline = markerline_stemlines_baseline
         self.markerline = markerline
         self.stemlines = stemlines
