output.txt

22.3
°C
not found
/(1) EBusRoot/(3) Zusatzmodul/(4) CIRCUIT 1/(119) /(3) 00:01

parse.py

#!/usr/bin/env python3

from xml.etree import ElementTree as ET

ns = {
    'env': "http://schemas.xmlsoap.org/soap/envelope/",
    'ns': "http://ws01.lom.ch/soap/",
}

tree = ET.parse('test.xml')

value = tree.find('.//value', ns)
print(value.text)

unit = tree.find('.//unit', ns)
print(unit.text)

missing = tree.find('.//missing', ns)
if missing is None:
    print("not found")

oid = tree.find('./env:Body/ns:getDpResponse/ref/oid', ns)
print(oid.text)

test.xml

<?xml version="1.0" encoding="utf-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns="http://ws01.lom.ch/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
 <SOAP-ENV:Body>
  <ns:getDpResponse>
   <ref>
    <oid>/(1) EBusRoot/(3) Zusatzmodul/(4) CIRCUIT 1/(119) /(3) 00:01</oid>
    <prop>-r--</prop>
   </ref>
   <dpCfg>
    <index>3</index>
    <name>00:01</name>
    <prop>-r--</prop>
    <desc>Scalar Var</desc>
    <value>22.3</value>
    <unit>°C</unit>
    <type>13</type>
    <step>0.1</step>
    <minValue>0.0</minValue>
    <maxValue>50.0</maxValue>
   </dpCfg>
  </ns:getDpResponse>
 </SOAP-ENV:Body>
</SOAP-ENV:Envelope>