matplotlib
diff --git a/‎lib/matplotlib/backends/backend_pdf.py‎
Lines changed: 7 additions & 1 deletion b/‎lib/matplotlib/backends/backend_pdf.py‎
Lines changed: 7 additions & 1 deletion
diff --git a/‎lib/matplotlib/backends/backend_svg.py‎
Lines changed: 7 additions & 2 deletions b/‎lib/matplotlib/backends/backend_svg.py‎
Lines changed: 7 additions & 2 deletions
diff --git a/‎lib/matplotlib/tests/baseline_images/test_axes/contour_hatching.pdf‎
15 Bytes b/‎lib/matplotlib/tests/baseline_images/test_axes/contour_hatching.pdf‎
15 Bytes
diff --git a/‎lib/matplotlib/tests/baseline_images/test_axes/contour_hatching.png‎
595 Bytes b/‎lib/matplotlib/tests/baseline_images/test_axes/contour_hatching.png‎
595 Bytes
diff --git a/‎lib/matplotlib/tests/baseline_images/test_axes/contour_hatching.svg‎
Lines changed: 24 additions & 24 deletions b/‎lib/matplotlib/tests/baseline_images/test_axes/contour_hatching.svg‎
Lines changed: 24 additions & 24 deletions
@@ -1058,7 +1058,13 @@ def alphaState(self, alpha):
 
     def hatchPattern(self, hatch_style):
         # The colors may come in as numpy arrays, which aren't hashable
-        hatch_style = (tuple(hatch_style[0]), tuple(hatch_style[1]), hatch_style[2])
+        if hatch_style is not None:
+            face, edge, hatch = hatch_style
+            if face is not None:
+                face = tuple(face)
+            if edge is not None:
+                edge = tuple(edge)
+            hatch_style = (face, edge, hatch)
 
         pattern = self.hatchPatterns.get(hatch_style, None)
         if pattern is not None:
 
@@ -327,11 +327,16 @@ def _get_hatch(self, gc, rgbFace):
         """
         Create a new hatch pattern
         """
-        dictkey = (gc.get_hatch(), tuple(rgbFace), tuple(gc.get_rgb()))
+        if rgbFace is not None:
+            rgbFace = tuple(rgbFace)
+        edge = gc.get_rgb()
+        if edge is not None:
+            edge = tuple(edge)
+        dictkey = (gc.get_hatch(), rgbFace, edge)
         oid = self._hatchd.get(dictkey)
         if oid is None:
             oid = self._make_id(u'h', dictkey)
-            self._hatchd[dictkey] = ((gc.get_hatch_path(), rgbFace, gc.get_rgb()), oid)
+            self._hatchd[dictkey] = ((gc.get_hatch_path(), rgbFace, edge), oid)
         else:
             _, oid = oid
         return oid