def __add__(self, other):
        '''
        Durations can be added with Duration, timedelta, date and datetime
        objects.
        '''
        if isinstance(other, Duration):
            newduration = Duration(years=self.years + other.years,
                                   months=self.months + other.months)
            newduration.tdelta = self.tdelta + other.tdelta
            return newduration
        try:
            # try anything that looks like a date or datetime
            # 'other' has attributes year, month, day
            # and relies on 'timedelta + other' being implemented
            if (not(float(self.years).is_integer() and
                    float(self.months).is_integer())):
                raise ValueError('fractional years or months not supported'
                                 ' for date calculations')
            newmonth = other.month + self.months
            carry, newmonth = fquotmod(newmonth, 1, 13)
            newyear = other.year + self.years + carry
            maxdays = max_days_in_month(newyear, newmonth)
            if other.day > maxdays:
                newday = maxdays
            else:
                newday = other.day
            newdt = other.replace(
                year=int(newyear), month=int(newmonth), day=int(newday)
            )
            # does a timedelta + date/datetime
            return self.tdelta + newdt
        except AttributeError:
            # other probably was not a date/datetime compatible object
            pass
        try:
            # try if other is a timedelta
            # relies on timedelta + timedelta supported
            newduration = Duration(years=self.years, months=self.months)
            newduration.tdelta = self.tdelta + other
            return newduration
        except AttributeError:
            # ignore ... other probably was not a timedelta compatible object
            pass
        # we have tried everything .... return a NotImplemented
        return NotImplemented

        Durations can be added with Duration, timedelta, date and datetime
        objects.
        
Solutions/CyberArkAudit/Data Connectors/.python_packages/lib/site-packages/isodate/duration.py