AttributeError: 'pygame.Surface' object has no attribute 'screen'

I am learning Python from the book, "PYTHON CRASH COURSE: A Hands-On, Project-Based Introduction to Programming", 2E. In that while making game, I am getting the error

Traceback (most recent call last):  File "d:\BOOKS\python\my-projects\AlienInvasion\tempCodeRunnerFile.py", line 69, in <module>  alinv = AlienInvasion()  File "d:\BOOKS\python\my-projects\AlienInvasion\tempCodeRunnerFile.py", line 22, in __init__  self.ship = Ship(self.screen)  File "d:\BOOKS\python\my-projects\AlienInvasion\ship.py", line 10, in   __init__  self.screen = alinv_game.screen  AttributeError: 'pygame.Surface' object has no attribute 'screen'  

My Code is: AlienInvasion.py

# Importing modules  import sys  import pygame  from settings import Settings  from ship import Ship      class AlienInvasion:      '''Class to manage game assets and behavior'''        def __init__(self):          '''Constructor to initialize the game and its assets'''          pygame.init()          self.settings = Settings()            self.screen = pygame.display.set_mode((0, 0), pygame.FULLSCREEN)          self.settings.screen_width = self.screen.get_rect().width          self.settings.screen_height = self.screen.get_rect().height            pygame.display.set_caption("Alien Invasion")            self.ship = Ship(self.screen)        def run_game(self):          '''Starts the main loop for the game'''          while True:              self._check_events()              self.ship.update()              self._update_screen()        def _check_events(self):          '''Watch for the keyboard and mouse events'''          for event in pygame.event.get():              if event.type == pygame.QUIT:                  sys.exit()                elif event.type == pygame.KEYDOWN:                  self._check_keydown_events(event)                elif event.type == pygame.KEYUP:                  self._check_keyup_events(event)        def _check_keydown_events(self, event):          """Respond to keypresses."""          if event.key == pygame.K_RIGHT:              self.ship.moving_right = True          elif event.key == pygame.K_LEFT:              self.ship.moving_left = True          elif event.key == pygame.K_ESCAPE:              sys.exit()        def _check_keyup_events(self, event):          """Respond to key releases."""          if event.key == pygame.K_RIGHT:              self.ship.moving_right = False          elif event.key == pygame.K_LEFT:              self.ship.moving_left = False        def _update_screen(self):          '''Redraw the screen during each pass of the loop'''          self.screen.fill(self.settings.bg_color)          self.ship.blitme()          '''Make the most recently drawn screen visible'''          pygame.display.flip()      if __name__ == '__main__':      '''Make a game instance, and run the game'''      alinv = AlienInvasion()      alinv.run_game()  

ship.py

import pygame      class Ship:      '''A class to manage the ship'''        def __init__(self, alinv_game):          '''Initialize the ship and set its starting position'''            self.screen = alinv_game.screen          self.settings = alinv_game.settings          self.screen_rect = alinv_game.screen.get_rect()            '''Load the ship image and get its rect'''          self.image = pygame.image.load('images/ship.bmp')          self.rect = self.image.get_rect()            '''Start each new ship at the bottom-center of the screen'''          self.rect.midbottom = self.screen_rect.midbottom            '''Store a decimal value for ship's horizontal position'''          self.x = float(self.rect.x)            '''Movement Flag'''          self.moving_right = False          self.moving_left = False        def update(self):                    if self.moving_right and self.rect.right < self.screen_rect.right:              self.x += self.settings.ship_speed          if self.moving_left and self.rect.left > 0:              self.x -= self.settings.ship_speed            '''Update rect obj from self.x'''          self.rect.x = self.x        def blitme(self):          '''Draw the ship at its current location.'''          self.screen.blit(self.image, self.rect)  

In the update method of class Ship, I Implemented two separate blocks to allow ship.rect.x value to be increased and then decreased when both left and right arrow keys are pressed. Otherwise, the self.moving_right will have more priority if 'elif' is implemented.

Settings.py

class Settings:      '''A class to store all settings for Alien Invasion Game.'''        def __init__(self):          '''Initialize the game's settings'''            # Screen Settings:          self.screen_width = 1280          self.screen_height = 720          self.bg_color = (230, 230, 230)            # Ship Settings:          self.ship_speed = 1.5  

Kindly help me finding the bug. I am nit able to solve the issue.

https://stackoverflow.com/questions/65802508/attributeerror-pygame-surface-object-has-no-attribute-screen January 20, 2021 at 11:04AM