Docstring update

efiring · efiring · commit 04e7b05cd4a5 · 2021-02-03T11:02:11.000-10:00
diff --git a/lib/matplotlib/cm.py b/lib/matplotlib/cm.py
@@ -366,7 +366,7 @@ def set_array(self, A):
 
         Parameters
         ----------
-        A : ndarray
+        A : ndarray or None
         """
         self._A = A
         self._update_dict['array'] = True
