分类器对约会网站的测试代码

def datingClassTest():
    hoRatio = 0.10#测试数据占的比重
    datingDataMat,datingLabels = file2matrix('datingTestSet2.txt')
    normMat,ranges,minVals = autoNorm(datingDataMat)#数值归一化
    m = normMat.shape[0]
    numTestVecs = int (m*hoRatio)
    errorCount = 0.0
    for i in range(numTestVecs):
        classifierResult = classify0(normMat[1,:],normMat[numTestVecs:m,:],\
                                     datingLabels[numTestVecs:m],3)
        print ("the classfier came back with: %d, the real answer is: %d"\
               %(classifierResult,datingLabels[i]))#3.6的print要在""外面加括号  print("####")
        if(classifierResult != datingLabels[i]): errorCount += 1.0
    print ("the total error rate is: %f" % (errorCount/float(numTestVecs)))
Traceback (most recent call last):
  File "<pyshell#26>", line 1, in <module>
    kNN.datingClassTest()
  File "E:\Python\kNN.py", line 52, in datingClassTest
    datingDataMat,datingLabels = file2matrix('datingTestSet.txt')
  File "E:\Python\kNN.py", line 25, in file2matrix
    fr = open(filename)
FileNotFoundError: [Errno 2] No such file or directory: 'datingTestSet.txt'

代码部分错误’datingTestSet.txt’应改为’datingTestSet2.txt’
如果把文件名改为’datingTestSet.txt’

ValueError: invalid literal for int() with base 10: 'largeDoses'

如果把代码改为为datingTestSet2.txt’

TypeError: %d format: a number is required, not list

检查了发现在代码标签的时候少加了个i,传的是个列表

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转载自blog.csdn.net/qq_42799920/article/details/81252408