Add comment to get_alpha

dstansby · dstansby · commit 3d11b3fa3bbd · 2019-04-17T10:27:40.000+01:00
diff --git a/lib/matplotlib/cm.py b/lib/matplotlib/cm.py
@@ -92,6 +92,7 @@ def _generate_cmap(name, lutsize):
     else:
         return colors.LinearSegmentedColormap.from_list(name, spec, lutsize)
 
+
 LUTSIZE = mpl.rcParams['image.lut']
 
 # Generate the reversed specifications (all at once, to avoid
@@ -332,6 +333,7 @@ def get_alpha(self):
         alpha : float
             Always returns 1.
         """
+        # This method is intended to be overridden by Artist sub-classes
         return 1.
 
     def set_cmap(self, cmap):
