Python 在多处理中将类作为参数传递后，类属性重置为默认值

我正在创建一个类来设置、保存和访问整个项目中的数据.下面是我的数据类:

class Data:
    """This class stores project-related constants as class attributes for easy access throughout the project."""
    ORG_URL: str = "https://www.myurl.com/"
    PROJECT_NAME: str = "My Project"
    root_path: str = ""

    @classmethod
    def set_root_path(cls, new_path):
        cls.root_path = new_path

下面是我的主类，它在运行时设置根:

from multiprocessing import Process, Manager


class Main:
    def __init__(self) -> None:
        # determine if application is a script file or frozen exe
        if getattr(sys, 'frozen', False):
            application_path = os.path.dirname(sys.executable)
        elif __file__:
            application_path = os.path.dirname(__file__)

        data = Data()
        data.set_root_path(f"{application_path}")
        

        with Manager() as manager:
            q = manager.Queue()
            args = manager.Queue()
            print(data.root_path)                          ## prints correct path
            gui = Process(target=GUI,args=(q,args,data))
            runner = Process(target=Runner,args=(q,args,data))
            gui.start()
            runner.start()
            gui.join()
            runner.join()

if __name__ == "__main__":
    Main()

下面是我的Runner类，我在其中访问根路径:

class Runner:
    def __init__(self,q,args,data) -> None:
        print("Initiating Runner")
        self.q = q
        self.args = args
        self.data = data
        print(self.data.root_path)  # prints ''

我try 了多种方法，但都不能解决问题.请帮帮忙.