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发布于 2024-09-26 03:02:44 字数 549 浏览 4 评论 0原文

我需要pickle对象[wxpython框架对象]并将其作为参数发送到多处理池模块上的函数apply_async 有人可以给我举个例子我该怎么做吗我尝试了以下操作并收到错误消息：

myfile = file(r"C:\binary.dat", "w")
pickle.dump(self, myfile)
myfile.close()


self.my_pool.apply_async(fun,[i,myfile])

def fun(i,self_object):
    window = pickle.load(self_oject)
    wx.CallAfter(window.LogData, msg)

有人可以告诉我可能是什么问题吗

如果错误在我收到的最后一条错误消息下方给出了一些指示：文件“C:\Python26\lib\copy_reg.py”，第 70 行，在 _reduce_ex 中引发 TypeError，“无法腌制 %s 对象” % base.名称 TypeError：无法腌制 PySwigObject 对象

原文

I need to pickle object [wxpython frame object] and send it as a prameter to this function apply_async on multiproccessing pool module
could someone provide me an example how can I do it
I tried the following and get an error message :

myfile = file(r"C:\binary.dat", "w")
pickle.dump(self, myfile)
myfile.close()


self.my_pool.apply_async(fun,[i,myfile])

def fun(i,self_object):
    window = pickle.load(self_oject)
    wx.CallAfter(window.LogData, msg)

could someone tell me what could be the problem

If the error give some indicator below the last error message i get:
File "C:\Python26\lib\copy_reg.py", line 70, in _reduce_ex
raise TypeError, "can't pickle %s objects" % base.name
TypeError: can't pickle PySwigObject objects

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彼岸花似海 2024-10-03 03:02:44

您不能序列化小部件以在另一个进程中使用。我猜您想更改由 multiprocessing 模块启动的另一个进程的 GUI 内容。在这种情况下，您应该在父流程中定义一个回调函数，当子流程的结果准备好时调用该函数。因此，您可以使用 的“callback”参数apply_async。

像这样的东西：

def fun(i):
    # do something in this sub-process and then return a log message
    return "finished doing something"

def cb(resultFromFun):
    wx.CallAfter(window.LogData, resultFromFun)

my_pool.apply_async(fun, [i], callback = cb)

You can not serialize a widget for use in another process. I guess you want to change the GUI content from another process that is started by the multiprocessing module. In that case, you should define a callback function in the parent process that gets called when the result of the sub-process is ready. Therefore you can use the "callback" parameter of apply_async.

Something like:

def fun(i):
    # do something in this sub-process and then return a log message
    return "finished doing something"

def cb(resultFromFun):
    wx.CallAfter(window.LogData, resultFromFun)

my_pool.apply_async(fun, [i], callback = cb)

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