报错：using fork to start your child process The “freeze_support()“ line can be omitted if the program

最新推荐文章于 2025-04-30 11:53:45 发布

原创最新推荐文章于 2025-04-30 11:53:45 发布 · 375 阅读

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此篇博客探讨了在Python中遇到的RuntimeError，焦点在于如何避免在主进程未完成初始化阶段启动子进程。文章强调了使用`if __name__ == '__main__': freeze_support()`的正确用法，并解释了在不使用fork启动子进程时的常见错误。

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(<class 'RuntimeError'>, RuntimeError('\n        
           An attempt has been made to start a new process before the\n        
           current process has finished its bootstrapping phase.\n\n        
           This probably means that you are not using fork to start your\n        
           child processes and you have forgotten to use the proper idiom\n        
           in the main module:\n\n           
            if __name__ == \'__main__\':\n                
            freeze_support()\n                ...\n\n        The "freeze_support()" line can be omitted if the program\n        is not going to be frozen to produce an executable.'), <traceback object at 0x000002518DC2B040>)

parser.add_argument('--num_workers', type=int, default=0, help='number of workers for the train loader')
parser.add_argument('--num_workers_test', type=int, default=0, help='number of workers for the test loader')