if you want to do dns lookups on a large number of hosts, then try
looking at gnu adns, or if you don't mind each request blocking until
it's complete, then see Alain's response below. I have written some
scripts myself which do massively parallel dns lookups quickly using
twisted.
If this is an excercise in just trying to do a straight port of your
program, and you're not interested in doing it in a nicer fashion, then
I would see the simple response from Carl Banks, however, you should
really have posted the python code you're trying instead!
Cheers. Tom.
On 02/02/11 10:24, Alain Ketterlin wrote:
Gary Chambers<gwch...@gwcmail.com> writes:
Given the following Perl script:
[41 lines of Perl removed]
Sorry, I'm lucky enough to be able to completely ignore Perl.
Will someone please provide some insight on how to accomplish that task in
Python?
> From what I understood in the comments of your script, here is a possible
python scriptlet:
import sys
import socket
canon,aliases,ipaddrs = socket.gethostbyname_ex(sys.argv[1])
print canon,",".join(aliases),",".join(ipaddrs)
See also getaddrinfo(). Note that a canonical name may have several ip
addresses (try with www.google.com if you doubt).
(BTW, this is a direct interface to gethostbyname(), and there is no
real need to use a tool and parse its output.)
I am unable to continually (i.e. it stops after displaying a single
line) loop through the output while testing for the matches on the two
regular expressions. Thank you.
It is hard to guess what you've tried. See the subprocess package
documentation.
-- Alain.
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