Re: [Tutor] reading from stdin

[=?ISO-8859-1?Q?Hugo_Gonz=E1lez_Monteverde?=]

Everypne else has answered pretty muh about this. I just want to add 
that if you want to read noncanonically (less thana line ending in "\n" 
you'll have to do it char by char =( AFAIK, there's no way to redefine a 
separator por readlines() (other than \n..)

Hugo
Nick Lunt wrote:
Hi folks,
I've been pondering how to get python to read from a pipe outside of
itself, sort of.
For example I tried a simple python prog to do a grep, eg
# ps -e | myprog.py cron
would give this output
3778 ?        00:00:00 crond
same as 
# ps -e | grep cron

The way I did this was to use sys.stdin.readlines() to get the output
from the pipe.
Here is the program:
[code]
import sys, glob
args = sys.stdin.readlines() # found on the net
pat = sys.argv[1]
for i in args:
        if (i.find(pat) != -1):
                print i,
[/code]
My question is am I getting the output from the pipe in the correct
way ? The way Im doing it works (so far) but should I be doing it
another way ?
Many thanks
Nick .
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_______________________________________________
Tutor maillist  -  Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor