Script que convierte una fecha de GPS con epoch del 6 de Enero de 1980 a GMT 0 y GMT -3 de Santiago de Chile

gistfile1.txt

#!/usr/bin/python
# Usage: python convert.py <gpsDate> - ej formato: 1858349648 
import datetime
import sys
# 1858 3 49648
def convert(gpsDate):
	epochDate = datetime.datetime.strptime("1980-1-6 00:00:00","%Y-%m-%d %H:%M:%S")
	# print epochDate
	week = gpsDate[0:4]
	days = gpsDate[4:5]
	seconds = gpsDate[5:]
	# print "semanas:"+week+" dias: "+days+" segundos: "+seconds
	addDays=(int(week)*7)+int(days)
	d = datetime.timedelta(days=int(addDays))
	epochDate = epochDate + d
	gmt = epochDate + datetime.timedelta(seconds=int(seconds))
	gmtSantiago = gmt - datetime.timedelta(seconds=int(10800))
	print "GMT 0: "+str(gmt)
	print "GMT-3: "+str(gmtSantiago)
	return "--------------------------"
if __name__ == "__main__":
	try:
		val = int(sys.argv[1])
		print convert(sys.argv[1])
	except ValueError:
		print("Ingrese solo numero enteros positivos")