关于Pygame Mixer模块在旧版MacOS下的Python报错咨询

运行环境 #

• 设备：2017款MacBook Air
• 系统：MacOS 10.13.6
• Python版本：3.11.0
• pygame版本：2.2.0

报错信息 #

pygame 2.2.0 (SDL 2.0.22, Python 3.11.0)
Hello from the pygame community. https://www.pygame.org/contribute.html
/Users/lens14/Desktop/python_work/alien_invasion/alien_invasion.py:40: RuntimeWarning: use mixer: dlopen(/Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/mixer.cpython-311-darwin.so, 2): Library not loaded: @loader_path/libmp3lame.0.dylib
  Referenced from: /Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/.dylibs/libsndfile.1.0.34.dylib
  Reason: no suitable image found.  Did find:
        /Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/.dylibs/libmp3lame.0.dylib: cannot load 'libmp3lame.0.dylib' (load command 0x80000034 is unknown)
        /Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/.dylibs/libmp3lame.0.dylib: cannot load 'libmp3lame.0.dylib' (load command 0x80000034 is unknown)
(ImportError: dlopen(/Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/mixer.cpython-311-darwin.so, 2): Library not loaded: @loader_path/libmp3lame.0.dylib
  Referenced from: /Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/.dylibs/libsndfile.1.0.34.dylib
  Reason: no suitable image found.  Did find:
        /Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/.dylibs/libmp3lame.0.dylib: cannot load 'libmp3lame.0.dylib' (load command 0x80000034 is unknown)
        /Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/.dylibs/libmp3lame.0.dylib: cannot load 'libmp3lame.0.dylib' (load command 0x80000034 is unknown))
  self.bulletSound = pygame.mixer.Sound('Game_bullet.wav')
Traceback (most recent call last):
  File "/Users/lens14/Desktop/python_work/alien_invasion/alien_invasion.py", line 354, in <module>
    ai = AlienInvasion()
         ^^^^^^^^^^^^^^^
  File "/Users/lens14/Desktop/python_work/alien_invasion/alien_invasion.py", line 40, in __init__
    self.bulletSound = pygame.mixer.Sound('Game_bullet.wav')
                       ^^^^^^^^^^^^^^^^^^
  File "/Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/__init__.py", line 70, in __getattr__
    raise NotImplementedError(missing_msg)
NotImplementedError: mixer module not available (ImportError: dlopen(/Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/mixer.cpython-311-darwin.so, 2): Library not loaded: @loader_path/libmp3lame.0.dylib
  Referenced from: /Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/.dylibs/libsndfile.1.0.34.dylib
  Reason: no suitable image found.  Did find:
        /Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/.dylibs/libmp3lame.0.dylib: cannot load 'libmp3lame.0.dylib' (load command 0x80000034 is unknown)
        /Users/lens14/Library/Python/3.11/lib/python/site-packages/pygame/.dylibs/libmp3lame.0.dylib: cannot load 'libmp3lame.0.dylib' (load command 0x80000034 is unknown))

已尝试操作 #

• 移除所有声音命令后，程序可正常运行
• 参照在线教程添加声音命令代码
• 使用报错片段搜索，未找到明确原因

疑问 #

1. 这属于编程错误还是Mixer模块未安装导致的问题？
2. 是否因为使用旧版MacOS，导致模块无法正常加载？
3. 若第二个问题答案为是，不更换电脑的情况下有哪些解决选项？

解答 #

1. 既不是编程错误，也不是Mixer模块未安装。从报错信息看，Mixer模块的文件存在，但它依赖的libmp3lame.0.dylib库无法在你的系统上加载，属于依赖库与系统版本不兼容的问题。

2. 是。MacOS 10.13.6（High Sierra）是较旧的系统，你安装的pygame 2.2.0搭配Python 3.11，打包的依赖库（比如libmp3lame）可能使用了仅在更高版本MacOS才支持的编译特性（报错里的load command 0x80000034是MacOS 10.15+才支持的命令），导致旧系统无法识别加载。

3. 不更换电脑的解决选项：

   • 降级Python版本：卸载Python 3.11，安装Python 3.8或3.9（这两个版本对MacOS 10.13.6兼容性更好），然后重新安装pygame（建议选择2.0.x系列版本，对旧系统支持更完善）。
   • 降级pygame版本：卸载当前的pygame 2.2.0，安装更早的稳定版本，比如执行pip install pygame==2.0.3，该版本的依赖库未使用高版本系统特性。
   • 手动替换兼容依赖库：找到支持MacOS 10.13.6的libmp3lame.0.dylib文件，替换pygame目录下.dylibs文件夹中的对应文件（该操作有一定风险，需确保文件版本完全匹配）。
   • 临时禁用声音功能：如果上述方法都无法解决，可继续移除声音相关代码，保持程序正常运行。

内容的提问来源于stack exchange，提问作者Alex