Python XML 解析问题
我有一个如下所示的 xml 文件：
<!DOCTYPE ROOT SYSTEM "zombie.dtd">
<ROOT>
<row>
<field name="buildid">26960</field>
<field name="cast(status as char)">Filesystem 1K-blocks Used Available Use% Mounted on
C:cygwinin 285217976 88055920 197162056 31% /usr/bin
C:cygwinlib 285217976 88055920 197162056 31% /usr/lib
C:cygwin 285217976 88055920 197162056 31% /
c: 285217976 88055920 197162056 31% /cygdrive/c
d: 285217976 88055920 197162056 31% /cygdrive/d</field>
<field name="eventtime">2011-05-25 16:26:09</field>
<field name="schedulerid">13</field>
</row>
我正在尝试解析各个字段（buildid、status、eventtime 等），但我所有函数调用的结果都没有得到任何结果，这就是我正在做的事情：
log("Parsing XML file...")
try:
xml = ET.parse(xml_file)
except Exception, inst:
print "Unexpected error opening %s: %s" % (file, inst)
sys.exit(1)
log("Parsing Complete")
#store the root of the element tree
root = xml.getroot()
zombies = []
for zombie in root.findall('row/'):
#read the zombie data
buildID = zombie.get('buildid')
print buildID
status = zombie.get('cast(status as char')
print status
eventTime = zombie.get('eventtime')
print eventTime
schedulerID = zombie.get('schedulerid')
print schedulerID
#create a zombie object
#z = Zombie(buildID, status, eventTime, schedulerID)
#zombies.append(z)
有人可以告诉我我做错了什么吗？
谢谢
I have an xml file that looks like this:
<!DOCTYPE ROOT SYSTEM "zombie.dtd">
<ROOT>
<row>
<field name="buildid">26960</field>
<field name="cast(status as char)">Filesystem 1K-blocks Used Available Use% Mounted on
C:cygwinin 285217976 88055920 197162056 31% /usr/bin
C:cygwinlib 285217976 88055920 197162056 31% /usr/lib
C:cygwin 285217976 88055920 197162056 31% /
c: 285217976 88055920 197162056 31% /cygdrive/c
d: 285217976 88055920 197162056 31% /cygdrive/d</field>
<field name="eventtime">2011-05-25 16:26:09</field>
<field name="schedulerid">13</field>
</row>
and I am trying to parse out the individual fields (buildid, status, eventtime, etc) but I am getting none as the result of all of my function calls, here is what I am doing:
log("Parsing XML file...")
try:
xml = ET.parse(xml_file)
except Exception, inst:
print "Unexpected error opening %s: %s" % (file, inst)
sys.exit(1)
log("Parsing Complete")
#store the root of the element tree
root = xml.getroot()
zombies = []
for zombie in root.findall('row/'):
#read the zombie data
buildID = zombie.get('buildid')
print buildID
status = zombie.get('cast(status as char')
print status
eventTime = zombie.get('eventtime')
print eventTime
schedulerID = zombie.get('schedulerid')
print schedulerID
#create a zombie object
#z = Zombie(buildID, status, eventTime, schedulerID)
#zombies.append(z)
can someone tell me what I am doing wrong?
Thanks
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评论（2）
您的
zombie是一个|
get()时，您正在尝试获取|
元素的节点值>
如果您有 Python 2.7，则可以使用 ElementTree 的部分 XPath 支持来查找正确的元素：
Your
zombieis a<row>element, not the<field>element that you want. When you callget()on it, you are trying to get an attribute on the<row>element, but what you want is the node value of the<field>element with that id.If you have Python 2.7, you can use ElementTree's partial XPath support to find the correct element:
您应该获取僵尸的
text属性，而不是使用它的get()方法。这将为您提供另外，如果您使用ElementTree，请看一下
lxml模块，它通常比ET更好，并且完全支持XPath 1.0 表达式（您可以使用它轻松地按名称查找元素）。You should be getting the
textproperty of the zombie, not using itsget()method. That will give you the content inside de<field>tag.Also, if you are using ElementTree, take a look at the
lxmlmodule, which is generally better than ET, and fully supports XPath 1.0 expressions (which you can use to easily find the elements by their name).