XML:删除节点的子节点
问题描述:
我想查找xml文件中具有特定标签名的所有节点,可以说“foo”。 如果这些foo-tags使它们具有节点名称“bar”的子节点,那么我想要删除这些节点。结果应写入文件。XML:删除节点的子节点
<myDoc>
<foo>
<bar/> // remove this one
</foo>
<foo>
<anyThing>
<bar/> // don't remove this one
</anyThing>
</foo>
</myDoc>
Thanx for any hints。正如标签所示,我想用python来做到这一点。
答
您可以使用ElementTree:
from xml.etree.ElementTree import ElementTree
tree = ElementTree()
tree.parse('in.xml')
foos = tree.findall('foo')
for foo in foos:
bars = foo.findall('bar')
for bar in bars:
foo.remove(bar)
tree.write('out.xml')
答
许多感谢miles82给我的线索来解决我的问题。 这是从我的xml文件删除多节点和/或多元素。从我巨大的原始文件的样本数据是这样的:
<Data>
<horsedata>
<horse_name>DO NOT DELETE</horse_name>
<stats_data>
<stat type="ALL_WEATHR">
GOT TO GO
</stats_data>
<sire><sirename>GOT TO GO</sirename><tmmark>M</tmmark><stud_fee>5000</stud_fee>
</sire>
<dam><damname>GOT TO GO</damname><damsire>WISED UP</damsire>
</dam>
<jockey><stat_breed>GOT TO GO</stat_breed><jock_disp>Lopez Charles C</jock_disp>
<stats_data>
<stat type="LAST30">
GOT TO GO
</stat>
</stats_data>
</jockey>
<workoutdata>Some More Text ... </workoutdata>
<workoutdata>Yet More Text</workoutdata>
<ppdata><racedate>20150801</racedate><trackcode>DO NOT DELETE</trackcode><trackname>Monmouth Park</trackname>
<ppdata><racedate>20150715</racedate><trackcode>DO NOT DELET</trackcode><trackname>Belmont Park</trackname>er>2</racenumber><racebreed>TB</racebreed><country>USA</country><racetype>MCL</racetype><raceclass>MC</raceclass><claimprice>20000</claimprice><purse>29000</purse><classratin>76</classratin><trackcondi>FT</trackcondi><distance>600</distance><disttype>F</disttype><aboutdist/><courseid>D</courseid><surface>D</surface><pulledofft>0</pulledofft><winddirect/><windspeed>0</windspeed><trackvaria>12</trackvaria><sealedtrac/><racegrade>0</racegrade><agerestric>3U</agerestric><sexrestric/><statebredr/><abbrevcond/><postpositi>4</postpositi><favorite>0</favorite><weightcarr>119</weightcarr><jockfirst>Eduardo</jockfirst><jockmiddle/><jocklast>Ulloa</jocklast><jocksuffix/><jockdisp>Ulloa Eduardo</jockdisp><equipment>BF</equipment><medication/><fieldsize>6</fieldsize><posttimeod>54.25</posttimeod><shortcomme>3w upper, gave way</shortcomme><longcommen>slight bobble st, vied 4p early, cleared 2p turn, 3w 1/4,gave way</longcommen><gatebreak>3</gatebreak><position1>1</position1><lenback1>-50.00</lenback1><horsetime1>22.49</horsetime1><leadertime>22.49</leadertime><pacefigure>108</pacefigure><position2>1</position2><lenback2>-150.00</lenback2><horsetime2>46.56</horsetime2><leadertim2>46.56</leadertim2><pacefigur2>77</pacefigur2><positionst>5</positionst><lenbackstr>810.00</lenbackstr><horsetimes>60.75</horsetimes><leadertim3>59.40</leadertim3><dqindicato/><positionfi>6</positionfi><lenbackfin>1700.00</lenbackfin><horsetimef>75.50</horsetimef><leadertim4>72.67</leadertim4><speedfigur>33</speedfigur><turffigure>0.0</turffigure><winnersspe>71</winnersspe><foreignspe>-97</foreignspe><horseclaim>0</horseclaim><biasstyle>F</biasstyle><biaspath>N</biaspath><complineho>Lightning Ron</complineho><complinele>275.00</complinele><complinewe>124</complinewe><complinedq/><complineh2>Thomas Knight</complineh2><complinel2>25.00</complinel2><complinew2>119</complinew2><complined2/><complineh3>Heavy Hitter</complineh3><complinel3>450.00</complinel3><complinew3>124</complinew3><complined3/><linebefore/><lineafter/><domesticpp>1</domesticpp><oflfinish>6</oflfinish><runup_dist>64</runup_dist><rail_dist>-1</rail_dist><apprweight>0</apprweight><vd_claim/><vd_reason/></ppdata>
</horsedata>
</Data>
我感兴趣的是什么,以保持只有两三个元素,即horsename,workoutdata和ppdata ...
<?xml version="1.0"?>
tree=ET.parse('bel.xml')
root=tree.getroot()
horses=tree.findall('.//horsedata')
for horse in horses:
stats = horse.findall('stats_data')
sires = horse.findall('sire')
dams = horse.findall('dam')
jockeys = horse.findall('jockey')
trainers = horse.findall('trainer')
for stat in stats:
horse.remove(stat)
for sire in sires:
horse.remove(sire)
for dam in dams:
horse.remove(dam)
for jockey in jockeys:
horse.remove(jockey)
for trainer in trainers:
horse.remove(trainer)
tree.write('junk.xml')``
这里是最终输出:
<Data>
<horsedata>
<horse_name>DO NOT DELETE</horse_name>
<workoutdata>Some More Text ... </workoutdata>
<workoutdata>Yet More Text</workoutdata>
<ppdata><racedate>20150801</racedate><trackcode>DO NOT DELETE</trackcode><trackname>Monmouth Park</trackname></ppdata>
<ppdata><racedate>20150715</racedate><trackcode>DO NOT DELET</trackcode><trackname>Belmont Park</trackname></ppdata>
</horsedata>
</Data>