AttributeError: 'NoneType' object has no attribute 'WriteFile'

win11 + python3.11

报错:

from multiprocessing import Pool,Process
def func(i):
    print(i)
if __name__ == '__main__':
    pool = Pool(10)
    for i in range(10):
        p = Process(target=func, args=(i,))
        p.start()

"""
1
0
9
3
7
2
6
4
5
8
Exception ignored in: <function Pool.__del__ at 0x000001F92C4C0900>
Traceback (most recent call last):
  File "C:\ProgramData\anaconda3\Lib\multiprocessing\pool.py", line 271, in __del__
  File "C:\ProgramData\anaconda3\Lib\multiprocessing\queues.py", line 374, in put
  File "C:\ProgramData\anaconda3\Lib\multiprocessing\connection.py", line 199, in send_bytes
  File "C:\ProgramData\anaconda3\Lib\multiprocessing\connection.py", line 279, in _send_bytes
AttributeError: 'NoneType' object has no attribute 'WriteFile'
"""

这个问题是代码问题,不能进程池和进程同时混用.

解决方案要么选择使用进程池要么选择使用多进程.

from multiprocessing import Process
from concurrent.futures import ProcessPoolExecutor
def func(i):
    print(i)
if __name__ == '__main__':
    # 多进程实现
    # for i in range(10):
    #     p = Process(target=func, args=(i,))
    #     p.start()
    
    # 进程池实现进程的创建
    pool = ProcessPoolExecutor(10)
    for i in range(10):
        pool.submit(func, i)
    pool.shutdown(wait=True)