FIX: Ignore exception if attempted deletion fails (fixes #817)

scikit-image · Feb 28, 2015 · d5462a2 · d5462a2
1 parent 3f6d9fa
commit d5462a2
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/skimage/measure/_find_contours.py b/skimage/measure/_find_contours.py
@@ -167,7 +167,10 @@ def _assemble_contours(points_iterator):
                     head.extend(tail)
                     # remove all traces of tail:
                     del starts[to_point]
-                    del ends[tail[-1]]
+                    try:
+                        del ends[tail[-1]]
+                    except:
+                        pass
                     del contours[tail_num]
                     # remove the old end of head and add the new end.
                     del ends[from_point]