[pymvpa] Construct custom queryengine with dict

[Swaroop Guntupalli]

Hi,

I am trying to make a QueryEngine() with a custom dict which takes in some
id and returns neighborhood. So, far I have failed. I am pasting my attempt
below. Any help would be appreciated.

Thanks,
Swaroop

##
# custom dict that has feature ids as keys and neighborhood as values
testdict = {i: range(i) for i in range(10)}
qe = IndexQueryEngine(testid=testdict)


# fake dataset
fake_ds = Dataset(samples=np.random.rand(5, 10), fa={'testid': range(10)})

# training
qe.train(fake_ds)

# this works fine
print qe.ids

# this line below fails with  TypeError: 'dict' object is not callable
# in line#572 in mvpa2/misc/neighborhood.py
qe[0]
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