我正在尝试使用ElementTree在XML文件中找到特定元素。这是XML:
<documentRoot>
<?version="1.0" encoding="UTF-8" standalone="yes"?>
<n:CallFinished xmlns="http://api.callfire.com/data" xmlns:n="http://api.callfire.com/notification/xsd">
<n:SubscriptionId>96763001</n:SubscriptionId>
<Call id="158864460001">
<FromNumber>5129618605</FromNumber>
<ToNumber>15122537666</ToNumber>
<State>FINISHED</State>
<ContactId>125069153001</ContactId>
<Inbound>true</Inbound>
<Created>2014-01-15T00:15:05Z</Created>
<Modified>2014-01-15T00:15:18Z</Modified>
<FinalResult>LA</FinalResult>
<CallRecord id="94732950001">
<Result>LA</Result>
<FinishTime>2014-01-15T00:15:15Z</FinishTime>
<BilledAmount>1.0</BilledAmount>
<AnswerTime>2014-01-15T00:15:06Z</AnswerTime>
<Duration>9</Duration>
</CallRecord>
</Call>
</n:CallFinished>
</documentRoot>
我对<Created>
项感兴趣。这是我正在使用的代码:
import xml.etree.ElementTree as ET
calls_root = ET.fromstring(calls_xml)
for item in calls_root.find('CallFinished/Call/Created'):
print "Found you!"
call_start = item.text
我尝试了一堆不同的XPath表达式,但是我很难过 - 我无法找到该元素。有什么提示吗?
答案 0 :(得分:1)
您没有引用XML文档中存在的命名空间,因此ElementTree无法在该XPath中找到元素。 You need to tell ElementTree what namespaces you are using.
以下内容应该有效:
import xml.etree.ElementTree as ET
namespaces = {'n':'{http://api.callfire.com/notification/xsd}',
'_':'{http://api.callfire.com/data}'
}
calls_root = ET.fromstring(calls_xml)
for item in calls_root.find('{n}CallFinished/{_}Call/{_}Created'.format(**namespaces)):
print "Found you!"
call_start = item.text