用Python处理通讯 [英] Process communication in Python

问题描述

在python中的两个进程之间建立通信的最佳方法是什么?谷歌搜索后，我尝试这样做:

What is the best way to establish communication between two processes in python? After some googling, I tried to do so:

parent_pipe, child_pipe = Pipe()
p = Process(target = instance_tuple.instance.run(), \
    args = (parent_pipe, child_pipe,))
p.start()

将数据发送到子进程:

command = Command(command_name, args)
parent_pipe.send(command)

处理目标函数:

while True:
    if (self.parent_pipe.poll()):
        command = parent_pipe.recv()
        if (command.name == 'init_model'):
            self.init_model()
        elif (command.name == 'get_tree'):
            tree = self.get_fidesys_tree(*command.args)
            result = CommandResult(command.name, tree)
            self.child_pipe.send(result)
        elif(command.name == 'set_variable'):
            name = command.args[0]
            value = command.args[1]
            self.config[name] = value

但是它似乎不起作用(子进程无法通过parent_pipe接收任何信息).我该如何解决?

But it doesn't seem to work (child process doesn't receive anything through parent_pipe). How can I fix it?

提前谢谢.

推荐答案

您可以在此处查看:

You can have a look here : http://docs.python.org/library/multiprocessing.html#exchanging-objects-between-processes The solution is close to yours but seems easier.

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