use standalone numpy shape function

afvincent · afvincent · commit 703c0ceb086b · 2018-06-05T15:33:03.000-07:00
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -3947,7 +3947,7 @@ def scatter(self, x, y, s=None, c=None, marker=None, cmap=None, norm=None,
                 # c not acceptable as PathCollection facecolor
                 raise ValueError("c of shape {} not acceptable as a color "
                                  "sequence for x with size {}, y with size {}"
-                                 .format(c.shape, x.size, y.size))
+                                 .format(np.shape(c), x.size, y.size))
         else:
             colors = None  # use cmap, norm after collection is created
 
