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Groups > comp.lang.python > #8660

poll of filesystem

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Hi,

just want to use poll method to get data from /proc file system. Use
simple code for it. Problem is it seems poll return POLLIN flag but
when I try to read data it's always empty. Could be a problem changes
are so fast that print can't print it?

Code:

#!/usr/bin/python

import select
from select import POLLIN, POLLERR

p = select.poll()

fd = open("/proc/loadavg", "r")

p.register(fd.fileno(), POLLIN)

while True:
events = p.poll(1000)
	if (events == -1):
		print "timeout"
	fd0, event = events[0]
	if (event == POLLIN):
		print fd.read()

Thanks,

marek
-- 
as simple and primitive as possible
-------------------------------------------------
Marek Belisko - OPEN-NANDRA
Freelance Developer

Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
Tel: +421 915 052 184
skype: marekwhite
icq: 290551086
web: http://open-nandra.com

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poll of filesystem Belisko Marek <marek.belisko@gmail.com> - 2011-07-02 11:40 +0200
  Re: poll of filesystem Nobody <nobody@nowhere.com> - 2011-07-02 18:49 +0100
  Re: poll of filesystem Tim Roberts <timr@probo.com> - 2011-07-02 15:37 -0700

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