[机器学习实战-ch09]TypeError: unsupported operand type(s) for /: 'map' and 'int'

在执行这一段命令的最后一行时出现了问题

>>>reload(regTrees)
<module 'regTrees' from 'regTrees.pyc'>
>>> from numpy import *
The data from figure 9.1 is stored in a file called ex00.txt.
>>> myDat=regTrees.loadDataSet('ex00.txt')
>>> myMat = mat(myDat)
>>> regTrees.createTree(myMat)

---

查了一下网上的方法，发现loadDataSet()函数里面的map方法和int不兼容，网上解决方法是在map外面加一个list，像这样：

结果试了下，还是不行！！！

然后自己改了下代码，发现运行OK了！！！，如下：

def loadDataSet(fileName):      #general function to parse tab -delimited floats
    dataMat = []                #assume last column is target value
    fr = open(fileName)
    for line in fr.readlines():
        curLine = line.strip().split('\t')
        fltLine = []
        for i in curLine:
           fltLine.append(float(i))
        dataMat.append(fltLine)
    return dataMat