On Jan 22, 3:35 pm, Stef Mientki <[EMAIL PROTECTED]> wrote: > Mike Driscoll wrote: > > On Jan 17, 3:56 pm, Stef Mientki <[EMAIL PROTECTED]> wrote: > > >> hello, > > >> I've a program (not written in Python) that generates a few thousands > >> bytes per second, > >> these files are dumped in 2 buffers (files), at in interval time of 50 > >> msec, > >> the files can be read by another program, to do further processing. > > >> A program written in VB or delphi can handle the data in the 2 buffers > >> perfectly. > >> Sometimes Python is also able to process the data correctly, > >> but often it can't :-( > > >> I keep one of the files open en test the size of the open datafile each > >> 50 msec. > >> I have tried > >> os.stat ( ....) [ ST_SIZE] > >> os.path.getsize ( ... ) > >> but they both have the same behaviour, sometimes it works, and the data > >> is collected each 50 .. 100 msec, > >> sometimes 1 .. 1.5 seconds is needed to detect a change in filesize. > > >> I'm using python 2.4 on winXP. > > >> Is there a solution for this problem ? > > >> thanks, > >> Stef Mientki > > > Tim Golden has a method to watch for changes in a directory on his > > website: > > >http://tgolden.sc.sabren.com/python/win32_how_do_i/watch_directory_fo... > > > This old post also mentions something similar: > > >http://mail.python.org/pipermail/python-list/2007-October/463065.html > > > And here's a cookbook recipe that claims to do it as well using > > decorators: > > >http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/426620 > > > Hopefully that will get you going. > > > Mike > > thanks Mike, > sorry for the late reaction. > I've it working perfect now. > After all, os.stat works perfectly well, > the problem was in the program that generated the file with increasing > size, > by truncating it after each block write, it apperently garantees that > the file is flushed to disk and all problems are solved. > > cheers, > Stef Mientki
I almost asked if you were making sure you had flushed the data to the file...oh well. Mike -- http://mail.python.org/mailman/listinfo/python-list
