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kMeans.py does not work in python3 #9

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vitoyan opened this issue Dec 11, 2017 · 1 comment

vitoyan commented Dec 11, 2017

in kMeans.py in CH10. it does not work in python3.

    def randCent(dataSet, k):
        n = shape(dataSet)[1]
        centroids = mat(zeros((k, n)))
        for j in range(n):
            minJ = min(dataSet[:,j])
            rangeJ = float(max(dataSet[:,j]) - minJ)

i got a error

rangeJ = float(max(dataSet[:,j]) - minJ)
TypeError: unsupported operand type(s) for -: 'map' and 'map'

Contributor

shenyyi commented Dec 20, 2017

CH10 is not working with python3 yet, but to quick fix this, you can change this line in loadDataset()

from:
fltLine = map(float,curLine) #map all elements to float()
to:
fltLine = list(map(float,curLine)) #map all elements to float()

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