python - TypeError: ufunc 'subtract' did not contain a loop with signature matching types dtype('S32') dtype('S32') dtype('S32') -


i know question has been asked many times have seen corresponding answers it, still unable rectify error.

from numpy import *  import operator  import sys  def createdataset():      group = array([ [1.0, 2.0], [1.0,4.0], [4.0, 1.0], [4.0, 2.0] ])     labels = ['action', 'action', 'romantic', 'romantic']     return group, labels  def calcdistance(inx, dataset, labels, k):      datasetsize = dataset.shape[0]     print datasetsize     mat = tile(inx, (datasetsize, 1)) - dataset     sqdiffmat = mat ** 2     sqdistances = sqdiffmat.sum(axis=1)     distances = sqdistances ** 0.5     sorteddistindices = distances.argsort()     return sorteddistindices  def findmajorityclass(inx, dataset, labels, k, sorteddistindices):      classcount = {}     in range(k):         voteilabel = labels[sorteddistindices[i]]         classcount[voteilabel] = classcount.get(voteilabel, 0) + 1     return sorted(classcount.iteritems(), key=operator.itemgetter(1), reverse=true)  def classify0(inx, dataset, labels, k):      sorteddistindices = calcdistance(inx, dataset, labels, k)     sortedclasscount = findmajorityclass(inx, dataset, labels, k,sorteddistindices)     return sortedclasscount[0][0]  line in sys.stdin:      line = line.strip()     line = line.split('\t')     key1,key2 = line     group, labels = createdataset()     result = classify0([key1,key2], group, labels,3)     print "%s\t%s\t%s" %(key1,key2,result)

error :

traceback (most recent call last):      file "./reducer_knn.py", line 71, in <module>         result = classify([key1,key2], group, labels, 3)     file "./reducer_knn.py", line 59, in classify         sorteddistindices = calcdistance(inx, dataset, labels, k)     file "./reducer_knn.py", line 21, in calcdistance         sqrt = [(((dataset[i]-inx) ** 2).sum(axis=0) ** 0.5) in range(datasetsize)]     typeerror: ufunc 'subtract' did not contain loop signature matching types dtype('s32') dtype('s32') dtype('s32')


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