使用 jupyter notebook 获取 python3 错误“AttributeError: type object 'Settings' has no attribute 'screen_width'”

Question

我正在尝试 Eric Mattes 的 python 课程，并复制了提供的代码和其他人的在线代码，但不断收到 AttributeError: type object 'Settings' has no attribute 'screen_width' and cannot figure what is wrong someone please help.

我的代码如下：

alien.py:

import sys

import pygame

from settings import Settings
from ship import Ship

def run_game():
    # Initialize game and create a screen object.
    #initilise pygame, settings and screen object
    pygame.init()
    ai_settings = Settings()
    screen = pygame.display.set_mode(                                     
        (ai_settings.screen_width, ai_settings.screen_height))
    pygame.display.set_caption("Alien Invasion")

    
    # make ship
    ship = Ship(screen)

 # Start the main loop for the game.
    while True:
        # Redraw the screen during each pass through the loop.
        screen.fill(ai_settings.bg_color)
        
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                 sys.exit()

 # Make the most recently drawn screen visible.
        pygame.display.flip()
        ship.blitme()
    
run_game()

我的设置脚本如下：

class Settings():
    """A class to store all the settings for Alien Invasion """

    def __init__(self):
        """Initialize the game settings"""
        # screen settings
        self.screen_width = 1200
        self.screen_height = 800
        self.bg_color = (230, 230, 230)
        self.ship_speed_factor = 8

我还在单独的单元格中的 alien.py 脚本中运行：

x = Settings()
x.screen_width

输出： 1200 哪个是正确的，我在找什么

enter code here

我知道它无法从 Settings 类调用 screen_width，这意味着拼写错误或类不工作，但我在设置文件本身中有 screen_width 工作，所以我很困惑。任何帮助将不胜感激!!!!!!!!!!!!

（我知道这个问题已经被问过 AttributeError: 'Settings' object has no attribute 'screen_width'？如何解决这个问题？ 但它没有给出答案）

尝试执行代码并出现错误：AttributeError: type object 'Settings' has no attribute 'screen_width'