data.xml

<?xml version="1.0"?>
<data>
 <no>
 12
 </no>
 <no1>1</no1>
 <no2>6</no2>
 <no3>24</no3>
 <op>+</op>
</data>


run.xml

from ldtp import *
datafilename = 'no.xml'
from ldtputils import *
data_object = LdtpDataFileParser (datafilename)
num = data_object.gettagvalue ('no')
num1= data_object.gettagvalue ('op')
num2= data_object.gettagvalue ('no2')