python将xml文件转换成excel文件

#coding=utf8
from xml.dom import minidom
from excute_excel import  executeExel #自己写的模块

class Xml():
     def  getxml(self):
         #打开xml文档
         dom = minidom.parse(r'testsuite-deep.xml')
         #用于得到dom对象的文档元素，并把获得的对象给root
         root = dom.documentElement
         #可以使用getElementsByTagName方法获取元素
         itemlist = root.getElementsByTagName('testcase')


         row =1
         for i in itemlist:

            #getAttribute方法可以获得元素的属性所对应的值
            name= i.getAttribute('name')
            actions = i.getElementsByTagName('actions')
            expectedresults = i.getElementsByTagName('expectedresults')
            preconditions = i.getElementsByTagName('preconditions')

            plist = []
            for pre in preconditions:
                # childNodes返回子节点的一个列表，如果子节点有值，则进行如下操作
                if len(pre.childNodes)>0:
                    # 获取第一个子节点的数据
                    p =  str(pre.childNodes[0].data)
                    #将输出的一些字符清楚
                    pre = p.replace('
', '').replace('tab', '').\
replace('
', '').replace('\n', '').replace('
', '')
                    plist.append(pre)
            precontent = '\n'.join(plist)
            print(precontent)



            list = []
            for action in actions:
                #childNodes返回子节点的一个列表，如果子节点有值，则进行如下操作
                 if len(action.childNodes)>0:
                     #获取第一个子节点的数据
                     a =  str(action.childNodes[0].data)

                     a = a.replace('
','').replace('tab','').replace('
','').replace('\n','') \
                         .replace('
', '')
                     list.append(a)
                 else:
                     pass
            step = '\n'.join(list)

            elist = []
            for expectedresult in expectedresults:
                if len(expectedresult.childNodes)>0:
                    m = str(expectedresult.childNodes[0].data)
                    m = m.replace('
', '').replace('tab', '').replace('
', '').replace('\n', '')\
                        .replace('
','')
                    elist.append(m)
                else:
                    pass

            expect = '\n'.join(elist)


            try:
               excel = executeExel('web.xls')

               excel.write_exist_excel_result(row, 0,precontent)
               excel.write_exist_excel_result(row,2,name)
               excel.write_exist_excel_result(row, 3, step)
               excel.write_exist_excel_result(row, 4, expect)
               row += 1


            except Exception as e:
                print(e)



if __name__ == '__main__':
    xm = Xml()
    xm.getxml()