运行 Python 的 ProcessPoolExecutor 如何在 [=11th=] 本身中使用 class 函数？

Question

希望我的标题有意义，如果不是的话，这就是我所说的例子

from concurrent.futures import ProcessPoolExecutor


class App:
    def __init__(self):
        pass

    def __funct(self, a, b):
        return a * b

    def doing_func_in_parallel(self, list_a, list_b):
        process_executors = ProcessPoolExecutor()
        process_futures = []
        for a, b in zip(list_a, list_b):
            process_future = process_executors.submit(self.__funct, a=a, b=b)

            process_futures.append(process_future)

        list_result = []
        for future in process_futures:
            list_result.append(future.result())
        return list_result


if __name__ == '__main__':
    test_app = App()
    list_a = [1, 2, 3]
    list_b = [1, 2, 3]
    print(test_app.doing_func_in_parallel(list_a, list_b))

当我尝试运行时，我得到：

AttributeError: 'App' object has no attribute '__funct'

我可以不在同一个 class 中调用 ProcessPoolExecutor 运行方法吗？有什么解决办法吗？

Answer 1

此错误与 Python 的命名约定有关。

Double underscore will mangle the attribute names of a class to avoid conflicts of attribute names between classes. Python will automatically add "_ClassName" to the front of the attribute name which has a double underscore in front of it. Read more

要修复您的应用程序，只需将您的方法重命名为 _funct。

运行 Python 的 ProcessPoolExecutor 如何在 [=11th=] 本身中使用 class 函数？

How to run Python's ProcessPoolExexcutor with a class function within the class itself?

python

class

concurrent.futures