python实现分割xml文件

某某7呀

xml文件a.xml，但是格式不规范，<managedObject></managedObject>  或者 <managedObject .../> 两种格式  有的里面没有子元素

a.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE raml SYSTEM 'raml20.dtd'>
<raml version="2.0" xmlns="raml20.xsd">
  <cmData type="actual">
    <header>
      <log dateTime="2019-02-27T17:28:38" action="created" appInfo="ActualExporter">InternalValues are used</log>
    </header>
    <managedObject class="MRBTS" version="SBTS17A_1707_001" distName="PLMN-PLMN/MRBTS-804874" id="2048554">
      <p name="name">WZWL20</p>
      <p name="btsName">WZW0020</p>
    </managedObject>
    <managedObject class="MRBTS" version="SBTS17A_1707_001" distName="PLMN-PLMN/MRBTS-805575" id="2056406">
      <p name="name">WZWL129</p>
      <p name="btsName">WZW0129</p>
    </managedObject>
    <managedObject class="MRBTS" version="SBTS17A_1707_001" distName="PLMN-PLMN/MRBTS-808996" id="1910785">
      <p name="name">WZWL147</p>
      <p name="btsName">WZW0147</p>
    </managedObject>
    <managedObject class="VLANIF" version="SBTS16.10" distName="PLMN-PLMN/MRBTS-804874/TNL-1/ETHSVC-1/ETHIF-1/VLANIF-1" id="1018535">
      <p name="vlanId">3002</p>
    </managedObject>
    <managedObject class="VLANIF" version="SBTS16.10" distName="PLMN-PLMN/MRBTS-805575/TNL-1/ETHSVC-1/ETHIF-1/VLANIF-2" id="1018536">
      <p name="vlanId">902</p>
    </managedObject>
    <managedObject class="VLANIF" version="SBTS16.10" distName="PLMN-PLMN/MRBTS-808996/TNL-1/ETHSVC-1/ETHIF-1/VLANIF-3" id="1018537">
      <p name="vlanId">2000</p>
    </managedObject>
    <managedObject class="EQM" version="EQM17A_1708_008" distName="PLMN-PLMN/MRBTS-804874/EQM-1" id="2093977"/>
    <managedObject class="TNLSVC" version="TNL17A_1708_008" distName="PLMN-PLMN/MRBTS-805575/TNLSVC-1" id="2093000"/>
    <managedObject class="EQM_R" version="EQMR17A_1708_008" distName="PLMN-PLMN/MRBTS-808996/EQM_R-1" id="2092995"/>
  </cmData>
</raml>


这里想实现------将xml文件分割成若干小文件，以distname区分， 类似的MRBTS-804874分割到一个文件中， 比如PLMN-PLMN/MRBTS-804874 以及 PLMN-PLMN/MRBTS-804874/EQM-1这样的输出到一个文件，用PLMN-PLMN/MRBTS-804874命名
请教诸位大神，如何在linux 用python脚本实现，小白一枚 先谢过诸位了  想输出的效果如下：

MRBTS-804874.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE raml SYSTEM 'raml20.dtd'>
<raml version="2.0" xmlns="raml20.xsd">
  <cmData type="actual">
    <header>
      <log dateTime="2019-02-27T17:28:38" action="created" appInfo="ActualExporter">InternalValues are used</log>
    </header>
    <managedObject class="MRBTS" version="SBTS17A_1707_001" distName="PLMN-PLMN/MRBTS-804874" id="2048554">
      <p name="name">WZWL20</p>
      <p name="btsName">WZW0020</p>
    </managedObject>    <managedObject class="VLANIF" version="SBTS16.10" distName="PLMN-PLMN/MRBTS-804874/TNL-1/ETHSVC-1/ETHIF-1/VLANIF-1" id="1018535">
      <p name="vlanId">3002</p>
    </managedObject>
    <managedObject class="EQM" version="EQM17A_1708_008" distName="PLMN-PLMN/MRBTS-804874/EQM-1" id="2093977"/>
  </cmData>
</raml>






MRBTS-805575.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE raml SYSTEM 'raml20.dtd'>
<raml version="2.0" xmlns="raml20.xsd">
  <cmData type="actual">
    <header>
      <log dateTime="2019-02-27T17:28:38" action="created" appInfo="ActualExporter">InternalValues are used</log>
    </header>
    <managedObject class="MRBTS" version="SBTS17A_1707_001" distName="PLMN-PLMN/MRBTS-805575" id="2048554">
      <p name="name">WZWL20</p>
      <p name="btsName">WZW0020</p>
    </managedObject>    <managedObject class="VLANIF" version="SBTS16.10" distName="PLMN-PLMN/MRBTS-805575/TNL-1/ETHSVC-1/ETHIF-1/VLANIF-1" id="1018535">
      <p name="vlanId">3002</p>
    </managedObject>
    <managedObject class="EQM" version="EQM17A_1708_008" distName="PLMN-PLMN/MRBTS-805575/EQM-1" id="2093977"/>
  </cmData>
</raml>







MRBTS-808996.xml
........

cfwyy

顺便学了一下lxml

1. from lxml import etree
   
2. 
   
3. file = "a.xml"
   
4. tree = etree.parse(file)
   
5. root = tree.getroot()
   
6. cmData = root[0]
   
7. 
   
8. managedObjects=cmData.findall("{raml20.xsd}managedObject")   #原始所有managedObject元素
   
9. distName= {ele.attrib['distName'].split("/")[1].split("-")[1] for ele in managedObjects}
   
10. 
    
11. for dist in distName:
    
12.     for ele in cmData.findall("{raml20.xsd}managedObject"): #清当前cmData所有元素
    
13.         cmData.remove(ele)
    
14.     for i in managedObjects:
    
15.         if i.attrib['distName'].split("/")[1].split("-")[1] == dist:
    
16.             cmData.append(i)                               #追加对应的元素
    
17.     tree.write("MRBTS-{}.xml".format(dist),encoding="UTF-8",xml_declaration=True,pretty_print=True)

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