wesley chun wrote:
>>>>> The script in the following can do the batch conversion from domain
>>>>> name to IP:
>>>> This is a Python list, not Perl!
>>> OMG! It's my mistake, sorry for this.
>> Lol..thats okay. Now that you are here and have seen what fun we have
>> writing Python code - why not join the party?
>>
>> Don't be shy to join us :p - i bet you won't be sorry.
>
>
> well, he had to join Tutor to post, unless a mod allowed his msg, so
> there should be *some* interest in doing it in Python. after all, the
> equivalent code is already slightly shorter and easier to read than
> the Perl version...
>
> import socket
> import sys
>
> for hp in sys.argv[1:]:
> h, p = hp.strip().split(':')
> print '%s -> %s:%s' % (hp, socket.gethostbyname(h), p)
Here's my attempt, a few lines longer. The 'split /:/ or next' part
confuses me a bit, though I suspect it's a bug ... 'cause I guess, as
long as the line has value even if it doesn't match the host:port
pattern, it won't be an exception, or undef, or false, or whatever you
call it in perl. :D
import socket
import fileinput
for line in fileinput.input():
line = line.rstrip('\n') # chomp
try: # split /:/
host, port = line.split(':')
except ValueError:
continue # or next
ip = socket.gethostbyname(host)
print '%s -> %s:%s' % (line, ip, port)
... and the opposite ...
for line in fileinput.input():
line = line.rstrip('\n')
try:
ip, port = line.split(':')
except ValueError:
continue
host = socket.gethostbyaddr(ip)[0]
print '%s -> %s:%s' % (line, host, port)
HTH,
Marty
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