用列表python

Question

我想用列表中保存的值替换子元素的text元素。

<weighting name="weighting">
        <aWeight>false</aWeight>
        <cWeight>true</cWeight>
</weighting>

我正在尝试将aWeight的文本值更改为true。我试图用这段代码来做。

elems = dom.findall('aWeight')
for elem in elems:
    if user_settings.new_settings[5] == 'true':
        '<aWeight>'.text = 'true'

dom.write('output.xml')

它正在编写文件，但值仍然保持为假。有没有人有任何建议。

Answer 1

由于您的代码没有访问elem变量来更改节点值，您需要告诉操作“需要操作的位置”。

import xml.etree.ElementTree as ET
elems = ET.fromstring('<weighting><aWeight>false</aWeight><cWeight>true</cWeight></weighting>')

test_condition = ['false', 'not set', 'bananas']

elems2 = elems.findall("aWeight")
for elem in elems2:
    print elem.text
    if elem.text in test_condition: 
        elem.text = 'true' 
    print elem.text
print ET.tostring(elems)