def gettoppixel(self, celly, onscreen=True):
        if onscreen and (celly < 0 or celly >= self.height):
            return None
        return celly * self._cellheight
Return the y pixel coordinate of the cells at row celly.
dataset/ETHPy150Open asweigart/pygcurse/pygcurse/__init__.py/PygcurseSurface.gettoppixel