利用BeautifulSoup和python处理xml

import bs4#导入BeautifulSoup的包
soup = bs4.BeautifulSoup(open('E:/test.xml'))#读取需要排序的xml文件
soup=soup.body
soup = soup.routes#根据xml文件的结构，做一个简单的处理
 list = []#构建一个List
for child in soup.children:#遍历子节点，并存在List中，用来排序
    print cnt
    list.append(child)
    cnt = cnt+1

kk = list[0]
for i in range (0, len(list)):#删除冗余的节点信息
    if list[i] == kk:
        print i
        list.pop(i)

listBackup = list[:]#复制一份List，怕出什么意外



def fun(x):#define the sort function
    return float(x['depart'])
    
list.sort(key=fun) #sort the list 


    
f=file("E:/sorted2.xml","a+")
for cnt in range(0,len(list)):#write the string to the file
    f.write(str(list[cnt])+'\n') 
f.close    #close the file handler