如何在 python 的多处理中创建嵌套共享对象？

Posted 2023-02-16

【中文标题】如何在 python 的多处理中创建嵌套共享对象？

【英文标题】：how do you create nested shared objects in multi processing in python?

【发布时间】：2021-10-06 18:45:04

【问题描述】：

如何在多处理中创建嵌套的可共享对象？ - 比如嵌套列表？

import multiprocessing

if __name__ == '__main__':
    manager = multiprocessing.Manager()
    processors = 5
    '''This is what I am trying to replicate'''
    # MASTER = [[[], [], []] for _ in range(processors)]

    MASTER = manager.list()

    for number in range(processors):
        MASTER.append(manager.list())
        index = MASTER.index(number)

        for _ in range(3):
            MASTER[index].append(manager.list())

    print(MASTER)

我在尝试运行此代码时收到 ValueError。

Traceback (most recent call last):
  File "C:/Users/engli/PycharmProjects/pythonProject/16/04/15/07/newtest.py", line 12, in <module>
    index = MASTER.index(number)
  File "<string>", line 2, in index

【参考方案1】：

找到了。

import multiprocessing

if __name__ == '__main__':
    manager = multiprocessing.Manager()
    processors = 5
    MASTER = manager.list()

    for number in range(processors):
        MASTER.append(manager.list())

    for x in MASTER:
        x.append(manager.list())
        x.append(manager.list())
        x.append(manager.list())