def _isdst(self, dt):
        '''
        Returns true if DST is active for given datetime object dt.
        '''
        tt = (dt.year, dt.month, dt.day,
              dt.hour, dt.minute, dt.second,
              dt.weekday(), 0, -1)
        stamp = time.mktime(tt)
        tt = time.localtime(stamp)
        return tt.tm_isdst > 0

        Returns true if DST is active for given datetime object dt.
        
Solutions/CyberArkAudit/Data Connectors/.python_packages/lib/site-packages/isodate/tzinfo.py