Python open a named pipe == hanging?
Rob Williscroft
rtw at freenet.co.uk
Thu Aug 3 17:03:11 EDT 2006
Rochester wrote in news:op.tdp5i6tsh12lye at cadet.mshome.net in
comp.lang.python:
> I just found out that the general open file mechanism doesn't work
> for named pipes (fifo). Say I wrote something like this and it
> simply hangs python:
>
> #!/usr/bin/python
>
> import os
>
> os.mkfifo('my_fifo')
>
> open('my_fifo', 'r+').write('some strings.')
> x = os.popen('cat my_fifo').read()
>
You will probably need to use os.open()
w = os.open( 'my_fifo', os.O_WRONLY )
r = os.open( 'my_fifo', os.O_RDONLY )
though I'm using windows now, so can't test it.
> print x
>
>
> I know I could use a tempfile instead of a fifo in this very
> simple case, I just want to know is there a standard way of
> handling fifos withing python.
See also os.pipe()
Rob.
--
http://www.victim-prime.dsl.pipex.com/
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