[Python] Parsing xml with minidom

Using Python, I am trying to parse an XML file that includes the following structure:

<channel>
<index>1</index>
<values>
<entry>
<key>SRV_PARAM_CH_ENABLED</key>
<value xsi:type="xs:boolean" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">false</value>
</entry>
<entry>
<key>SW_PARAMETER_CH_LABEL</key>
</entry>
</values>
</channel>


How can I obtain the value of key SRV_PARAM_CH_ENABLED if the key is present?

I am using xml.dom.minidom and am able to read up to the channel using:

import xml.dom.minidom

xml_doc = xml.dom.minidom.parse(path)
root = xml_doc.documentElement

chns = xml_doc.getElementsByTagName('channel')

for chn in chns:
idxx = chn.getElementsByTagName('index')
idx = idxx[0].childNodes[0].data # Gets ch number



but am stumped after that.

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