This. But I must warn you that it will still fail, giving you an error like this:
File "/Users/mtaylor/nta/nupic/src/nupic/encoders/base.py", line 351, in getBucketIndices
assert False, "Should be implemented in base classes that are not " \
AssertionError: Should be implemented in base classes that are not containers for other encoders
Until we get that bug fixed.