在进程之间共享字典 [英] share dict between processes

问题描述

我创建了一个单独的进程来处理我的云服务.我是这样生成的:

I spawn a seperate process to handle my cloud services. I spawnb it like this:

CldProc = Process(target=CloudRun)
CldProc.start()

我想知道我是否可以在该 CloudProc 和我当前的主进程之间拥有一个共享字典?

and am wondering if I can have a shared dictionary between that CloudProc and my current main process?

或者，我正在考虑使用 pickle 将我的数据从进程中转储到文件中并重新加载，这需要我使用 join() 来等待进程完成并退出.

Alternatively I am thinking to use pickle to dump my data into a file from the process and load it back, this requires me to use join() to wait for the process to complete and exit.

第二次编辑因此，我现在将我的 dict 声明为 mac_dict={} ，然后将其填充到我的子进程中并希望在我的主进程中访问它.现在我刚刚尝试了这个:

2nd EDIT So, I now have my dict declared like mac_dict={} and then I fill it in my subprocess and want to access it in my main process. Now I just tried this:

>>> dict = dict()
>>> dict['A'] = 1
>>> print dict
{'A': 1}

那么 Python 是如何知道应该从 Managers 调用 dict() 的呢?有什么可以借鉴的例子吗?

So how does Python know that dict() should be called from Managers? Is there any examples I can follow?

推荐答案

明白了，为了简化，我是这样处理的:

Got it, to simplify, I did it like this:

from multiprocessing import Process, Manager

def myf(myd):
    myd[1] = "HELLO WORLD!"

def proc(d):
    myf(d)

m=Manager()
locdict=m.dict()
locdict[2] = "HI BUDDY!"

p = Process(target=proc, args=(locdict,))

p.start()
p.join()
print locdict

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