Python 3.2 | WIndows 7 -- Multiprocessing and files not closing
mapoe
matthias at kill.at
Thu Oct 10 19:29:22 EDT 2013
On Thu, 10 Oct 2013 18:16:07 -0500, mapoe wrote:
> On Thu, 10 Oct 2013 08:31:21 -0700, Isaac Gerg wrote:
>
>> I have a function that looks like the following:
>>
>> #---------------------------------
>> filename = 'c:\testfile.h5'
>> f = open(filename,'r')
>> data = f.read()
>
> it seems kind of obvious from your sample:
> add: f.close()
should have read a little bit further :)
but I would close the file right after I have read all the data
>
>> q = multiprocessing.Queue()
>> p = multiprocess.Process(target=myFunction,args=(data,q))
>> p.start()
>> result = q.get()
>> p.join()
>> q.close()
>>
>> f.close()
>>
>> os.remove(filename)
>> #---------------------------------
>>
>> When I run this code, I get an error on the last line when I try to
>> remove the file. It tells me that someone has access to the file.
>> When I remove the queue and multiprocessing stuff, the function works
>> fine.
>>
>> What is going on here?
>>
>> Thanks in advance,
>> Isaac
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