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鱼C论坛»论坛 › 编程语言专区 › Python交流 › pycharm多进程代码没错但解释器报错问题求解
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[已解决]pycharm多进程代码没错但解释器报错问题求解

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ftwegc
发表于 2021-7-8 13:14:34 | 显示全部楼层 |阅读模式
50鱼币
  1. # 1. 导入进程包
  2. import multiprocessing
  3. import time


  6. # 跳舞任务
  7. def dance():
  8.     for i in range(3):
  9.         print("跳舞中...")
  10.         time.sleep(0.2)


  13. # 唱歌任务
  14. def sing():
  15.     for i in range(3):
  16.         print("唱歌中...")
  17.         time.sleep(0.2)



  21. dance_process = multiprocessing.Process(target=dance)
  22. sing_process = multiprocessing.Process(target=sing)

  24. # 3. 启动进程执行对应的任务
  25. dance_process.start()
  26. sing_process.start()

复制代码


报错信息：C:\Users\wzb\AppData\Local\Programs\Python\Python38\python.exe C:/Users/wzb/PycharmProjects/pythonProject1/1.py
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 116, in spawn_main
    exitcode = _main(fd, parent_sentinel)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 125, in _main
    prepare(preparation_data)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 236, in prepare
    _fixup_main_from_path(data['init_main_from_path'])
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 287, in _fixup_main_from_path
    main_content = runpy.run_path(main_path,
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 265, in run_path
    return _run_module_code(code, init_globals, run_name,
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 97, in _run_module_code
    _run_code(code, mod_globals, init_globals,
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Users\wzb\PycharmProjects\pythonProject1\1.py", line 28, in <module>
    dance_process.start()
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\process.py", line 121, in start
    self._popen = self._Popen(self)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 327, in _Popen
    return Popen(process_obj)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\popen_spawn_win32.py", line 45, in __init__
    prep_data = spawn.get_preparation_data(process_obj._name)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 154, in get_preparation_data
    _check_not_importing_main()
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 134, in _check_not_importing_main
    raise RuntimeError('''
RuntimeError:
        An attempt has been made to start a new process before the
        current process has finished its bootstrapping phase.

        This probably means that you are not using fork to start your
        child processes and you have forgotten to use the proper idiom
        in the main module:

            if __name__ == '__main__':
                freeze_support()
                ...

        The "freeze_support()" line can be omitted if the program
        is not going to be frozen to produce an executable.
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 116, in spawn_main
    exitcode = _main(fd, parent_sentinel)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 125, in _main
    prepare(preparation_data)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 236, in prepare
    _fixup_main_from_path(data['init_main_from_path'])
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 287, in _fixup_main_from_path
    main_content = runpy.run_path(main_path,
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 265, in run_path
    return _run_module_code(code, init_globals, run_name,
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 97, in _run_module_code
    _run_code(code, mod_globals, init_globals,
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Users\wzb\PycharmProjects\pythonProject1\1.py", line 28, in <module>
    dance_process.start()
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\process.py", line 121, in start
    self._popen = self._Popen(self)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 327, in _Popen
    return Popen(process_obj)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\popen_spawn_win32.py", line 45, in __init__
    prep_data = spawn.get_preparation_data(process_obj._name)
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 154, in get_preparation_data
    _check_not_importing_main()
  File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 134, in _check_not_importing_main
    raise RuntimeError('''
RuntimeError:
        An attempt has been made to start a new process before the
        current process has finished its bootstrapping phase.

        This probably means that you are not using fork to start your
        child processes and you have forgotten to use the proper idiom
        in the main module:

            if __name__ == '__main__':
                freeze_support()
                ...

        The "freeze_support()" line can be omitted if the program
        is not going to be frozen to produce an executable.



我用py3.8和py3.9都试了试，都不行，解释器也没报错，pycharm重装了好几遍，都不行 求帮助
最佳答案
月排行榜 / 总排行榜
rsj0315
2021-7-8 13:14:35
  1. # 1. 导入进程包
  2. import multiprocessing
  3. import time


  6. # 跳舞任务
  7. def dance():
  8.     for i in range(3):
  9.         print("跳舞中...")
  10.         time.sleep(0.2)


  13. # 唱歌任务
  14. def sing():
  15.     for i in range(3):
  16.         print("唱歌中...")
  17.         time.sleep(0.2)



  21. dance_process = multiprocessing.Process(target=dance)
  22. sing_process = multiprocessing.Process(target=sing)
  23. if __name__ == '__main__':

  25.     # 3. 启动进程执行对应的任务
  26.     dance_process.start()
  27.     sing_process.start()
复制代码


试试这个

最佳答案

rsj0315

查看完整内容

试试这个
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rsj0315
发表于 2021-7-8 13:14:35 | 显示全部楼层    本楼为最佳答案   
  1. # 1. 导入进程包
  2. import multiprocessing
  3. import time


  6. # 跳舞任务
  7. def dance():
  8.     for i in range(3):
  9.         print("跳舞中...")
  10.         time.sleep(0.2)


  13. # 唱歌任务
  14. def sing():
  15.     for i in range(3):
  16.         print("唱歌中...")
  17.         time.sleep(0.2)



  21. dance_process = multiprocessing.Process(target=dance)
  22. sing_process = multiprocessing.Process(target=sing)
  23. if __name__ == '__main__':

  25.     # 3. 启动进程执行对应的任务
  26.     dance_process.start()
  27.     sing_process.start()
复制代码


试试这个
小甲鱼最新课程 -> https://ilovefishc.com
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西瓜味的苹果
发表于 2021-7-8 14:32:49 | 显示全部楼层
向日葵号发来，我给你看
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ftwegc
 楼主| 发表于 2021-7-8 14:53:41 | 显示全部楼层
rsj0315 发表于 2021-7-8 13:37
试试这个

老哥厉害啊
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