讀取格式不正確的XML文件，屬性中不帶引號-python

Question

我有一個類似xml的文件，該文件的屬性attribute="xxx"中沒有引號，並且它沒有標准的<?xml version="1.0"?>標頭，因此當我嘗試解析時minidom或elementtree ，他們抱怨文件格式not well-formed ：

>>> import xml.etree.ElementTree as et
>>> tree = et.parse(infile)
>>> Traceback (most recent call last):
xml.etree.ElementTree.ParseError: not well-formed (invalid token): line 1, column 25

如何讀取輸入文件？ 或者如何使xml格式正確？

我的輸入文件如下所示：

<contextfile concordance=brown>
<context filename=br-a01 paras=yes>
<p pnum=1>
<s snum=1>
<wf cmd=ignore pos=DT>The</wf>
<wf cmd=done rdf=group pos=NNP lemma=group wnsn=1 lexsn=1:03:00:: pn=group>Fulton_County_Grand_Jury</wf>
<wf cmd=done pos=VB lemma=say wnsn=1 lexsn=2:32:00::>said</wf>
<wf cmd=done pos=NN lemma=friday wnsn=1 lexsn=1:28:00::>Friday</wf>
<wf cmd=ignore pos=DT>an</wf>
<wf cmd=done pos=NN lemma=investigation wnsn=1 lexsn=1:09:00::>investigation</wf>
<wf cmd=ignore pos=IN>of</wf>
<wf cmd=done pos=NN lemma=atlanta wnsn=1 lexsn=1:15:00::>Atlanta</wf>
<wf cmd=ignore pos=POS>'s</wf>
<wf cmd=done pos=JJ lemma=recent wnsn=2 lexsn=5:00:00:past:00>recent</wf>
<wf cmd=done pos=NN lemma=primary_election wnsn=1 lexsn=1:04:00::>primary_election</wf>
<wf cmd=done pos=VB lemma=produce wnsn=4 lexsn=2:39:01::>produced</wf>
<punc>``</punc>
<wf cmd=ignore pos=DT>no</wf>
<wf cmd=done pos=NN lemma=evidence wnsn=1 lexsn=1:09:00::>evidence</wf>
<punc>''</punc>
<wf cmd=ignore pos=IN>that</wf>
<wf cmd=ignore pos=DT>any</wf>
<wf cmd=done pos=NN lemma=irregularity wnsn=1 lexsn=1:04:00::>irregularities</wf>
<wf cmd=done pos=VB lemma=take_place wnsn=1 lexsn=2:30:00::>took_place</wf>
<punc>.</punc>
</s>
</p>
</context>
</contextfile>

Answer 1

使用lxml ：

mytext="""<contextfile concordance=brown>
<context filename=br-a01 paras=yes>
<p pnum=1>
....
<wf cmd=done pos=VB lemma=say wnsn=1 lexsn=2:32:00::>said</wf>
<wf cmd=done pos=NN lemma=friday wnsn=1 lexsn=1:28:00::>Friday</wf>
<wf cmd=ignore pos=DT>an</wf>
....
....
<punc>``</punc>
<wf cmd=ignore pos=DT>no</wf>
<wf cmd=done pos=NN lemma=evidence wnsn=1 lexsn=1:09:00::>evidence</wf>
<punc>''</punc>
....
<wf cmd=done pos=NN lemma=irregularity wnsn=1 lexsn=1:04:00::>irregularities</wf>
<punc>.</punc>
</s>
</p>
</context>
</contextfile>"""

from lxml import html
parsed = html.fromstring(mytext)
for x in parsed.getiterator(): print x.tag, x.attrib, x.text, x.tail

輸出：

contextfile {'concordance': 'brown'} None None
context {'paras': 'yes', 'filename': 'br-a01'} None None
p {'pnum': '1'} 
....


wf {'lemma': 'say', 'cmd': 'done', 'wnsn': '1', 'pos': 'VB', 'lexsn': '2:32:00::'} said None
wf {'lemma': 'friday', 'cmd': 'done', 'wnsn': '1', 'pos': 'NN', 'lexsn': '1:28:00::'} Friday None
wf {'cmd': 'ignore', 'pos': 'DT'} an 
....
....

punc {} `` None
wf {'cmd': 'ignore', 'pos': 'DT'} no None
wf {'lemma': 'evidence', 'cmd': 'done', 'wnsn': '1', 'pos': 'NN', 'lexsn': '1:09:00::'} evidence None
punc {} '' 
....

wf {'lemma': 'irregularity', 'cmd': 'done', 'wnsn': '1', 'pos': 'NN', 'lexsn': '1:04:00::'} irregularities None
punc {} . None