C:\Users\26311\AppData\Local\Programs\Python\Python37\python.exe: can't open file 'spawn_npc_sumo': [Errno 2] No such file or directory
时间: 2023-08-15 09:06:07 浏览: 146
引用[1]中的错误信息表明在使用多进程时出现了问题,可能是由于输入不足导致的。而引用[2]中提到可以将环境放到jupyter中,这可能是解决问题的一种方法。另外,引用[3]中提到了一个类似的错误,可能是由于某个对象无法被序列化导致的。根据问题描述,C:\Users\26311\AppData\Local\Programs\Python\Python37\python.exe: can't open file 'spawn_npc_sumo': [Errno 2] No such file or directory,可能是找不到文件或目录导致的错误。根据这些信息,可能需要检查文件或目录是否存在,并确保输入的完整性和正确性。
相关问题
UserWarning: detected Windows; aliasing chunkize to chunkize_serial warnings.warn("detected %s; aliasing chunkize to chunkize_serial" % entity) Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\Users\10735\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 116, in spawn_main exitcode = _main(fd, parent_sentinel) File "C:\Users\10735\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 125, in _main prepare(preparation_data) File "C:\Users\10735\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py"报错原因
这个错误提示信息可能是由于在 Windows 系统中调用了 multiprocessing 库的 spawn 方法所导致的。这个错误通常是由于在 Windows 上使用 multiprocessing 库时出现的,因为在 Windows 上,不能使用 fork 方法,只能使用 spawn 方法。要解决这个问题,可以尝试以下方法:
1. 尝试运行代码的地方是否有管理员权限,如果没有,以管理员身份运行。
2. 在代码的最开始加上以下语句:
import multiprocessing
if __name__ == '__main__':
multiprocessing.freeze_support()
这个语句可以为 Windows 系统下的多进程提供支持。
3. 禁用 spawn 方法,改用 fork 方法。但是在 Windows 系统上,无法使用 fork 方法。
希望这些方法可以帮助你解决问题。
(venv) C:\Users\Administrator\PycharmProjects\pythonProject>Python multiprocssing.py -d 2 -p www.baidu.com Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\Program Files\Python36\lib\multiprocessing\spawn.py", line 105, in spawn_main exitcode = _main(fd) File "C:\Program Files\Python36\lib\multiprocessing\spawn.py", line 114, in _main prepare(preparation_data) File "C:\Program Files\Python36\lib\multiprocessing\spawn.py", line 225, in prepare _fixup_main_from_path(data['init_main_from_path']) File "C:\Program Files\Python36\lib\multiprocessing\spawn.py", line 277, in _fixup_main_from_path run_name="__mp_main__") File "C:\Program Files\Python36\lib\runpy.py", line 263, in run_path pkg_name=pkg_name, script_name=fname) File "C:\Program Files\Python36\lib\runpy.py", line 96, in _run_module_code mod_name, mod_spec, pkg_name, script_name) File "C:\Program Files\Python36\lib\runpy.py", line 85, in _run_code exec(code, run_globals) File "C:\Users\Administrator\PycharmProjects\pythonProject\multiprocssing.py", line 10, in <module> readed_path = multiprocessing.Manager().list() File "C:\Program Files\Python36\lib\multiprocessing\context.py", line 56, in Manager m.start() File "C:\Program Files\Python36\lib\multiprocessing\managers.py", line 513, in start self._process.start() File "C:\Program Files\Python36\lib\multiprocessing\process.py", line 105, in start self._popen = self._Popen(self) File "C:\Program Files\Python36\lib\multiprocessing\context.py", line 322, in _Popen return Popen(process_obj) File "C:\Program Files\Python36\lib\multiprocessing\popen_spawn_win32.py", line 33, in __init__ prep_data = spawn.get_preparation_data(process_obj._name) File "C:\Program Files\Python36\lib\multiprocessing\spawn.py", line 143, in get_preparation_data _check_not_importing_main() File "C:\Program Files\Python36\lib\multiprocessing\spawn.py", line 136, in _check_not_importing_main is not going to be frozen to produce an executable.''') 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.此错误的原因及解决方法
这个错误是由于在 Windows 操作系统上使用 multiprocessing 模块时,必须在主模块中使用 `if __name__ == '__main__':` 条件判断来确保子进程能够正确启动。同时,在主模块中也需要调用 `multiprocessing.freeze_support()` 方法以支持进程的冻结(即打包为可执行文件)。
你可以在你的代码中添加以下代码来解决此问题:
```python
if __name__ == '__main__':
multiprocessing.freeze_support()
# 在这里添加你的主程序代码
```
这样就可以避免这个错误并正确启动子进程了。
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