这是一本详细介绍python及其应用的书籍，内容理论同时结合实际的例子，是关于 python的很经典的一本书籍-the book is about python,and it is therotical and practical.it is a very classical book anout python

按照制定的行对excel进行分割为不同的文件夹及不同文件(Divide the excel into different folders and different files according to the line made)

分类决策树的核心思想就是在一个数据集中找到一个最优特征，然后从这个特征的选值中找一个最优候选值，根据这个最优候选值将数据集分为两个子数据集，然后递归上述操作，直到满足指定条件为止。附代码(The core idea of a classified decision tree is to find an optimal feature in a data set, and then find an optimal candidate value from the selected value of