Changed behavior to only pass norm=mcolors.NoNorm() when the user doesn't pass a norm

bakes · bakes · commit 94f7e68ea656 · 2020-12-01T07:01:42.000+02:00
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -7662,8 +7662,9 @@ def spy(self, Z, precision=0, marker=None, markersize=None,
             if 'interpolation' in kwargs:
                 raise TypeError(
                     "spy() got an unexpected keyword argument 'interpolation'")
-            ret = self.imshow(mask, norm=mcolors.NoNorm(),
-                              interpolation='nearest', aspect=aspect,
+            if 'norm' not in kwargs:
+                kwargs['norm'] = mcolors.NoNorm()
+            ret = self.imshow(mask, interpolation='nearest', aspect=aspect,
                               origin=origin, **kwargs)
         else:
             if hasattr(Z, 'tocoo'):
