使用XPATH for Python解析XML

Question

I am new to Python - a few days old - and I would appreciate some help.

I want write a python code to parse the below XML as below:-

ServingCell----------NeighbourCell
L41_NBR3347_1----------L41_NBR3347_2
L41_NBR3347_1----------L41_NBR3347_3
L41_NBR3347_1----------L41_NBR3349_1
L41_NBR3347_1----------L41_NBREA2242_1

<LteCell id="L41_NBR3347_1">
 <attributes>
  <absPatternInfoTdd><unset/></absPatternInfoTdd>
  <additionalSpectrumEmission>1</additionalSpectrumEmission>
  <additionalSpectrumEmissionList><unset/></additionalSpectrumEmissionList>
  <LteSpeedDependentConf id="0">                   
    <attributes>                                    
     <tReselectionEutraSfHigh>lDot0</tReselectionEut
     <tReselectionEutraSfMedium>lDot0</tReselectionE
    </attributes>                                   
   </LteSpeedDependentConf>                         
   <LteNeighboringCellRelation id="L41_NBR3347_2">  
    <attributes>                                    
     <absPatternInfo><unset/></absPatternInfo>      
   </LteNeighboringCellRelation>                    
   <LteNeighboringCellRelation id="L41_NBR3347_3">  
    <attributes>                                    
     <absPatternInfo><unset/></absPatternInfo>      
   </LteNeighboringCellRelation>                    
   <LteNeighboringCellRelation id="L41_NBR3349_1">  
    <attributes>                                    
     <absPatternInfo><unset/></absPatternInfo>                            
   </LteNeighboringCellRelation>                    
   <LteNeighboringCellRelation id="L41_NBREA2242_1">
    <attributes>                                    
     <absPatternInfo><unset/></absPatternInfo>      
     <absPatternInfoTdd><unset/></absPatternInfoTdd>

Answer 1

First the xml path you produced is not correct: you need to close the tags your open. For example attributes is opened and not closed.

   <LteNeighboringCellRelation id="L41_NBR3349_1">  
       <attributes>                                    
       <absPatternInfo>
          <unset/>
       </absPatternInfo>                            
   </LteNeighboringCellRelation>

I refactored (and simplified it a little bit) the xml to correct it.

<LteCell id="L41_NBR3347_1">   
   <attributes>                    
      <LteNeighboringCellRelation id="L41_NBR3347_2">                                          
      </LteNeighboringCellRelation>                    
      <LteNeighboringCellRelation id="L41_NBR3347_3">         
      </LteNeighboringCellRelation>                    
      <LteNeighboringCellRelation id="L41_NBR3349_1">                                                             
      </LteNeighboringCellRelation>                    
      <LteNeighboringCellRelation id="L41_NBREA2242_1">
      </LteNeighboringCellRelation>
   </attributes> 
</LteCell> 

Here is the code to parse and display it.

import xml.etree.ElementTree as ET
tree = ET.parse("XmlExample.xml")
result = ''
root = tree.getroot()

for e in tree.findall('./attributes/LteNeighboringCellRelation'):#attributes/LteNeighboringCellRelation
    print(root.attrib['id']+'----------'+e.attrib.get('id'))

Hope that helps,