# -*- coding: utf-8 -*-
import datetime


def last_update():
    """function to return time for last update"""
    last_update_time = datetime.datetime(2013, 1, 1, 0, 0)
    with open("/var/log/pacman.log", 'r') as logfile:
        for line in logfile:
            if (line.find("starting full system upgrade") > -1):
                last_update_time = datetime.datetime(int(line[1:5]), int(line[6:8]), int(line[9:11]), int(line[12:14]), int(line[15:17]))
    return last_update_time


def since_last_update(last_update_time):
    """function to return time since last update"""
    since_lu_time = datetime.datetime.now() - last_update_time
    formatline = u"%3i дней %2i часов %2i минут" %(since_lu_time.days, int(since_lu_time.seconds / 60 / 60), int(since_lu_time.seconds / 60) % 60)
    return formatline


if __name__ == "__main__":
      print since_last_update(last_update())