python XSLT processing XML

xslt.py

import lxml.etree as ET
import argparse

parser = argparse.ArgumentParser(description='XSLT Transform XML file.')
parser.add_argument('xml', help='input xml file')
parser.add_argument('xsl', help='input xslt file')
parser.add_argument('-o', '--output', help='Output file')

args = parser.parse_args()


dom = ET.parse(args.xml)
xslt = ET.parse(args.xsl)
transform = ET.XSLT(xslt)
newdom = transform(dom)
content = ET.tostring(newdom, pretty_print=True)

if args.output :
    with open(args.output,'wb') as f:        
        newdom.write_output(f)
else:    
    print newdom