On Thu, Oct 10, 2013 at 2:49 PM, Isaac Gerg <isaac.g...@gergltd.com> wrote:
> > > > On Thu, Oct 10, 2013 at 2:41 PM, Ned Batchelder <n...@nedbatchelder.com>wrote: > >> On 10/10/13 12:44 PM, Isaac Gerg wrote: >> >>> Sorry, I am just providing pseudo code since I the code i have is quite >>> large. >>> >>> As I mentioned, the code works fine when I remove the multirpcessing >>> stuff so the filename is not the issue (though you are right in your >>> correction). >>> >>> Someone with the same problem posted a smaller, more complete example >>> here: >>> >>> http://stackoverflow.com/**questions/948119/preventing-** >>> file-handle-inheritance-in-**multiprocessing-lib<http://stackoverflow.com/questions/948119/preventing-file-handle-inheritance-in-multiprocessing-lib> >>> >>> None of the solutions posted work. >>> >> >> (BTW: it's better form to reply beneath the original text, not above it.) >> >> None of the solutions try the obvious thing of closing the file before >> spawning more processes. Would that work for you? A "with" statement is a >> convenient way to do this: >> >> with open(filename,'r') as f: >> data = f.read() >> >> The file is closed automatically when the with statement ends. >> >> --Ned. >> >> >>> On Thursday, October 10, 2013 12:38:19 PM UTC-4, Piet van Oostrum wrote: >>> >>>> Isaac Gerg <isaac.g...@gergltd.com> writes: >>>> >>>> >>>> >>>> I have a function that looks like the following: >>>>> >>>> >>>> >>>> That doesn't look like a function >>>> >>>> >>>> >>>> #-----------------------------**---- >>>>> filename = 'c:\testfile.h5' >>>>> >>>> >>>> >>>> Your filename is most probably wrong. It should be something like: >>>> >>>> >>>> >>>> filename = 'c:/testfile.h5' >>>> >>>> filename = 'c:\\testfile.h5' >>>> >>>> filename = r'c:\testfile.h5' >>>> >>>> -- >>>> >>>> Piet van Oostrum <p...@vanoostrum.org> >>>> >>>> WWW: http://pietvanoostrum.com/ >>>> >>>> PGP key: [8DAE142BE17999C4] >>>> >>> >> > I will try what you suggest and see if it works. > > Additionally, is there a place on the web to view this conversation and > reply? Currently, I am only able to access this list through email. > Ned, I am unable to try what you suggest. The multiprocess.Process call is within a class but its target is a static method outside of the class thus no pickling. I cannot close the file and then reopen after the multiprocess.Process call because other threads may be reading from the file during that time. Is there a way in Python 3.2 to prevent the multiprocess.Process from inheriting the file descriptors from the parent process OR, is there a way to ensure that the multiprocess is completely closed and garbaged collected by the time I want to use os.remove()? Isaac
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