error: undefined reference to `pa_threaded_mainloop_signal@PULSE_0'

这个错误通常出现在使用PulseAudio库时，编译器找不到对应的函数定义。可能是因为你的代码没有正确链接PulseAudio库。你可以检查一下你的编译命令是否正确，是否包含了正确的库文件路径和库文件名。如果还是不行，可以尝试在代码中加入`#include <pulse/mainloop.h>`来解决该问题。

相关问题

ImportError Traceback (most recent call last) Cell In[7], line 37 34 return jsonify({'answer': answer}) 36 if __name__ == '__main__': ---> 37 app.run(debug=True) File c:\users\ljimmy\appdata\local\programs\python\python38\lib\site-packages\flask\app.py:914, in Flask.run(self, host, port, debug, load_dotenv, **options) 911 from werkzeug.serving import run_simple 913 try: --> 914 run_simple(t.cast(str, host), port, self, **options) 915 finally: 916 # reset the first request information if the development server 917 # reset normally. This makes it possible to restart the server 918 # without reloader and that stuff from an interactive shell. 919 self._got_first_request = False File c:\users\ljimmy\appdata\local\programs\python\python38\lib\site-packages\werkzeug\serving.py:1097, in run_simple(hostname, port, application, use_reloader, use_debugger, use_evalex, extra_files, exclude_patterns, reloader_interval, reloader_type, threaded, processes, request_handler, static_files, passthrough_errors, ssl_context) 1094 from ._reloader import run_with_reloader 1096 try: -> 1097 run_with_reloader( 1098 srv.serve_forever, 1099 extra_files=extra_files, 1100 exclude_patterns=exclude_patterns, 1101 interval=reloader_interval, 1102 reloader_type=reloader_type, 1103 ) 1104 finally: 1105 srv.server_close() File c:\users\ljimmy\appdata\local\programs\python\python38\lib\site-packages\werkzeug\_reloader.py:440, in run_with_reloader(main_func, extra_files, exclude_patterns, interval, reloader_type) 437 import signal 439 signal.signal(signal.SIGTERM, lambda *args: sys.exit(0)) --> 440 reloader = reloader_loops[reloader_type]( 441 extra_files=extra_files, exclude_patterns=exclude_patterns, interval=interval 442 ) 444 try: 445 if os.environ.get("WERKZEUG_RUN_MAIN") == "true": File c:\users\ljimmy\appdata\local\programs\python\python38\lib\site-packages\werkzeug\_reloader.py:315, in WatchdogReloaderLoop.__init__(self, *args, **kwargs) 313 from watchdog.observers import Observer 314 from watchdog.events import PatternMatchingEventHandler --> 315 from watchdog.events import EVENT_TYPE_OPENED 316 from watchdog.events import FileModifiedEvent 318 super().__init__(*args, **kwargs) ImportError: cannot import name 'EVENT_TYPE_OPENED' from 'watchdog.events' (C:\Users\Ljimmy\AppData\Roaming\Python\Python38\site-packages\watchdog\events.py)

根据你提供的信息，这是一个 Python 的 ImportError 异常，异常信息显示无法从 watchdog.events 模块中导入 EVENT_TYPE_OPENED。这可能是因为版本兼容性问题或 watchdog 库未正确安装导致的。建议检查 watchdog 库的安装是否正确，并查看它是否与当前 Python 版本兼容。你可以尝试更新 watchdog 库或卸载并重新安装它。

TypeError: can't pickle _thread.RLock objects

This error occurs when you try to pickle or serialize an object that contains a `_thread.RLock` object.

A `RLock` object is a reentrant lock used for synchronization in multi-threaded programs. It is not pickleable because it contains low-level thread state that cannot be serialized.

To fix this error, you can try one of the following approaches:

1. Avoid pickling objects that contain `RLock` objects.

2. Use a different synchronization mechanism that is pickleable, such as a `multiprocessing.Lock` or a `threading.Lock`.

3. Use a custom `pickle` protocol that can handle `RLock` objects. However, this approach can be complex and may not be necessary for most use cases.

Overall, it's best to avoid using `RLock` objects in pickled objects and use alternative synchronization mechanisms if possible.