已经封装好的文件输入输出类模块，编写带文件输入输出功能的程序带上这个类模块能省很多代码（NT下测试通过）-Packaging has good input and output document type modules, prepared with input and output functions document the procedures put this type module can save a lot of code (NT tested)

这个是用python实现对xml文件的操作，主要是使用xml.etree.ElementTree这个模块对xml进行操作，已经封装成类，可以导入直接应用。-This is achieved using python xml file operation, mainly using xml.etree.ElementTree this module xml operation, has been packaged into a category, you can import directly.