def refresh(self):
            # Flush screen buffer to get all updates after doing the common
            # processing.  Exact timing of the signal can interrupt the
            # flush, raising an EINTR IOError, which we can safely ignore.
            super(_BlessedScreen, self).refresh()
            try:
                sys.stdout.flush()
            except IOError:
                pass
Get all Availability Zones associated with the current region.
dataset/ETHPy150Open peterbrittain/asciimatics/asciimatics/screen.py/_BlessedScreen.refresh--crossover with--dataset/ETHPy150Open darcyliu/storyboard/boto/ec2/connection.py/EC2Connection.get_all_zones