How do I pick the right python in Linux env?

[MDRI]

Thanks for weighing in.

Here is the code

#!/usr/bin/python
def Process_XML(infile, inxpath, xpathdln):
    """
       Process XML Xpath
    """   
    import xml.etree.ElementTree as ET
    from lxml import etree

    tree = etree.parse(infile)
    root = tree.getroot()
    print(root)
    for dln in tree.xpath(xpathdln):    
        # Iterate over attributes of datafield
            print(dln.tag + ' = ' + dln.text)
            for df in tree.xpath(inxpath):    
        # Iterate over attributes of datafield
                    print(df.tag + ' = ' + df.text)
                    for attrib_name in df.attrib:
                                    print( '@' + attrib_name + '=' + df.attrib[attrib_name])

        # subfield is a child of datafield, and iterate
                                    subfields = df.getchildren()
                                    for subfield in subfields:
                                                 print (subfield.tag + ' = ' + subfield.text)
    return;                
                
infile1 = '<CountryData.xml>  # Given below
inxpath1 = '//Country'
xpathdln = '/data'
Process_XML(infile1, inxpath1, xpathdln) 

The above code is tested in windows Python 3.8.1, but Linux has Python 2

INPUT Data
==============

<?xml version="1.0" encoding="UTF-8"?>
<data>
<country name="Liechtenstein">
<rank>1</rank>
<year>2008</year>
<gdppc>141100</gdppc>
<neighbor name="Austria" direction="E"/>
<neighbor name="Switzerland" direction="W"/>
</country>
<country name="Singapore">
<rank>4</rank>
<year>2011</year>
<gdppc>59900</gdppc>
<neighbor name="Malaysia" direction="N"/>
</country>
<country name="Panama">
<rank>68</rank>
<year>2012</year>
<gdppc>13600</gdppc>
<neighbor name="Costa Rica" direction="W"/>
<neighbor name="Colombia" direction="E"/>
</country>
</data>

The python code ==> xmltest.py
It is sitting in the home directory with u+x permission

If I use ./xmltest.py throw file not found

Running this in window make output, but Linux is not making output.

I ran with python -v xmltest.py.

I did not see any errors there as well.

Thanks for your guidance.