Adding virtual power to TCX file

gistfile1.py

import re

with open('29-01-14 20-53-27.tcx', 'rt') as f:
	for line in f:
		print line,
		match = re.match('\s+<Speed>(\d+.\d+)',line)
		if match:
			speed = float(match.group(1))
			speed_in_kmperh = speed/1000.0*60.0*60.0
			power_in_watt = int(speed_in_kmperh/6.0*50.0)
			print '                <Watts>%d</Watts>' % power_in_watt