pygame.FULLSCREEN returns blank screen instead of proper display

Question

I am following a tutorial to understand pygame. In this game i just set background color, and draw a image of ship and also handle events to manage position of ship (image). My code works properly in static screen size but gives blank screen when i try to open in full screen mode. Here is the properly working code for AlienInvasion class

class AlienInvasion:
    def __init__(self):
        pg.init()
        self.settings = Settings()
        self.screen = pg.display.set_mode((self.settings.width, self.settings.height))
        # width and height are static value 1366 and 768

        pg.display.set_caption('Pygame')
        self.ship = Ship(self)
        self.x = float(self.ship.rect.x)

        self.move_right = False
        self.move_left = False

    def run_game(self):
        while True:
            self._check_events()
            self.update()
            self._update_screen()

    # Function to manage events
    def _check_events(self):
        for event in pg.event.get():
            if(event.type == pg.QUIT):
                sys.exit()
            elif(event.type == pg.KEYDOWN):
                self._check_keydown_events(event)

            elif(event.type == pg.KEYUP):
                self._check_keyup_events(event)

    # manage key down events
    def _check_keydown_events(self, event):
        if(event.key == pg.K_RIGHT):
            self.move_right = True
        elif(event.key == pg.K_LEFT):
            self.move_left = True
        elif(event.key == pg.K_q):
            sys.exit()
    # manage key up enevts

    def _check_keyup_events(self, event):
        if(event.key == pg.K_RIGHT):
            self.move_right = False
        elif(event.key == pg.K_LEFT):
            self.move_left = False

    # Update position of image object
    def update(self):
        if(self.move_right and self.ship.rect.right < self.ship.screen_rect.right):
            self.x += self.settings.ship_speed
        elif(self.move_left and self.ship.rect.left > 0):
            self.x -= self.settings.ship_speed

        self.ship.rect.x = self.x

    # Actual Function that set background and display image object
    def _update_screen(self):
        self.screen.fill(self.settings.bg_color)
        self.ship.blitme()
        pg.display.flip()


if __name__ == '__main__':
    ai = AlienInvasion()
    ai.run_game()

Code for Settings class

class Settings:
def __init__(self):
    self.width = 1366
    self.height = 768
    self.bg_color = (230, 230, 230)
    self.ship_speed = 1.5

Code for Ship class

class Ship:
    def __init__(self, ai_game):
        self.screen = ai_game.screen
        self.screen_rect = ai_game.screen.get_rect()
        self.image = pygame.image.load('images/ship.bmp')
        self.rect = self.image.get_rect()
        self.rect.midbottom = self.screen_rect.midbottom

def blitme(self):
    a = self.screen.blit(self.image, (self.rect[0], self.rect[1] - 70))

finally ship.bmp

Here is the updated code of AlienInvasion.init function to open in full screen mode

def __init__(self):
    pg.init()
    self.settings = Settings()
    # Updated lines start
    self.screen = pg.display.set_mode((0, 0), pg.FULLSCREEN)
    self.settings.width = self.screen.get_rect().width
    self.settings.height = self.screen.get_rect().height
    # End Update Lines
    pg.display.set_caption('Pygame')
    self.ship = Ship(self)
    self.x = float(self.ship.rect.x)

    self.move_right = False
    self.move_left = False

Now it shows a blank black screen. I cant understand why