共享数组多处理 Python

Question

我正在使用共享数组在 Python 中运行多进程代码。问题是我无法初始化那个数组...要在我读过的多进程程序中共享一个数组我需要使用 multiprocessing.Array，但是当我在下面的代码中尝试它时它没有打印任何东西+ 我没有错误信息。import multiprocessing......if  __name__ == "__main__":   an_array= multiprocessing.Array("i", [1,2])   print(an_array)       # why does it not print anything? I was expecting to print [1,2]   p1 = multiprocessing.Process(target=function1, args = [an_array, 3]

Answer 1

要在 中打印元素，Array请执行以下操作：

import multiprocessing

if __name__ == '__main__':

    an_array = multiprocessing.Array("i", [1, 2])

    # first choice to print element in Array:

    for element in an_array:

        print(element)

    # second choice to print elements in Array:

    print(an_array[:])

    # third choice to print elements in Array:

    print(list(an_array[:]))