days between two dates

daysbetween.py

#!/usr/bin/python
# -*- coding: utf-8 -*-


import datetime
import sys


def compare(dates):
    if len(dates) < 2:
        dto = datetime.date.today()
    else:
        d, m, y = dates[1].split('/')
        dto = datetime.date(int(y), int(m), int(d))

    d, m, y = dates[0].split('/')
    dfrom = datetime.date(int(y), int(m), int(d))

    diff = (dfrom - dto).days
    return diff

try:
    diff = compare(sys.argv[1:])

    if diff < 0:
        format = "hace %d días"
    else:
        format = "en %d días"

    print format % abs(diff)


except:
    pass