Código de Python - Mostrar el tiempo en formato entendible

#!/usr/bin/env python

# -*- coding: utf-8 -*-

class timeHuman():

    # __seconds contains the number of seconds added in funcions

    # setMilisecons, setSeconds, setMinutes and setHours

    __seconds=0

    def reset(self):

        """

        reset the __seconds var

        """

        self.__seconds=0

        return self

    def setMiliseconds(self,value):

        self.__seconds+=int(value/1000)

        return self

    def setSeconds(self,value):

        self.__seconds+=value

        return self

    def setMinutes(self,value):

        self.__seconds+=value*60

        return self

    def setHours(self,value):

        self.__seconds+=value*60*60

        return self

    def getTimeHuman(self):

        days,hours,minutes,seconds=self.__calculate(self.__seconds)

        result=""

        if days:

            result+="%s day%s" % (days, "s" if days>1 else "")

        if hours:

            if result:

                result+=", "

            result+="%s hour%s" % (hours, "s" if hours>1 else "")

        if minutes:

            if result:

                result+=", "

            result+="%s minute%s" % (minutes, "s" if minutes>1 else "")

        if seconds:

            if result:

                result+=", "

            result+="%s second%s" % (seconds, "s" if seconds>1 else "")

        return " and ".join(result.rsplit(", ",1))

    def __calculate(self,seconds):

        """

        Runction that calculate the number or dayus, hours, minutes and seconds

        """

        days=0

        hours=0

        minutes=0

        if seconds>=60:

            minutes=int(seconds/60)

            seconds-=60*minutes

        if minutes>=60:

            hours=int(minutes/60)

            minutes-=60*hours

        if hours>=24:

            days=int(hours/24)

            hours-=24*days

        return days,hours,minutes,int(seconds)

if __name__=="__main__":

    obj=timeHuman()

    obj.reset().setMiliseconds(200)

    print(obj.getTimeHuman())

    obj.reset().setSeconds(1480)

    print(obj.getTimeHuman())

    obj.reset().setMinutes(60)

    print(obj.getTimeHuman())

    obj.reset().setHours(3)

    print(obj.getTimeHuman())

    obj.reset().setHours(30).setSeconds(1480).setMiliseconds(2000)

    print(obj.getTimeHuman())

    obj.reset().setSeconds(1441)

    print(obj.getTimeHuman())