def _update(self, frame_no):
        if frame_no % 2 == 0:
            if self._screen.is_visible(0, self._y):
                self._screen.print_at(
                    " " * self._screen.width, 0, self._y, bg=self._bg)
            self._y += 1
dataset/ETHPy150Open peterbrittain/asciimatics/asciimatics/effects.py/Wipe._update/original