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389959 (1) [Avatar] Offline
In chapter 9 , the code 9-2 , I find a line:
for splitVal in set(dataSet[:,featIndex]):
I am confused (since matrix can not convert to set , I think ) , and when I run it, a bug said TypeError: unhashable type: 'matrix'.

Then I change it to for splitVal in set(dataSet[:,featIndex].T.tolist()[0]):
There is also a bug: IndexError: index 0 is out of bounds for axis 0 with size 0

I think this sentence is just take the elements in the matrix to a set, so , how can I fix this problem?