Python - why is it not reading my variables?

Question

I'm a python newbie and I don't understand why it won't read my IP and ADDR variables in the function dns.zone.query(IP, ADDR)???

import dns.query
import dns.zone
import sys

IP = sys.stdin.readline()
ADDR = sys.stdin.readline()


z = dns.zone.from_xfr(dns.query.xfr(IP , ADDR))
names = z.nodes.keys()
names.sort()
for n in names:
    print z[n].to_text(n)

It works when I pass an actual IP and Domain, but not with the variables... I don't get what's wrong?

Do you get an error message? Have you tried debugging it to see on which line it goes wrong? — Mark Byers
– Mark Byers, Commented Aug 19, 2010 at 20:47

Bob · Accepted Answer · 2010-08-19 20:48:47Z

6

readline() will include a trailing newline. You can use sys.stdin.readline().strip()

answered Aug 19, 2010 at 20:48

Bob

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systempuntoout · Accepted Answer · 2010-08-19 20:49:05Z

2

I would try with:

IP = sys.stdin.readline().strip()
ADDR = sys.stdin.readline().strip()

Add some prints after the variables to debug it:

print '_%s_' % IP
print '_%s_' % ADDR

answered Aug 19, 2010 at 20:49

systempuntoout

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Comments

robert · Accepted Answer · 2010-08-19 20:46:39Z

2

Try sys.stdin.readline().strip(). You need to remove the newlines.

answered Aug 19, 2010 at 20:46

robert

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