→ python debug.py
 TypeError: 'consume' operand is not isolated
 Exception ignored in: 'KDTree.query'
 Traceback (most recent call last):
   File "/home/jjerphan/dev/kdtree/debug.py", line 18, in <module>
       tree.query(Y, knn_indices, knn_distances)
       TypeError: 'consume' operand is not isolated