Am 15.09.2012 18:20 schrieb Dan Katorza:
hello again friends,
thanks for everyone help on this.
i guess i figured it out in two ways.
the second one i prefer the most.
i will appreciate if someone can give me some tips.
thanks again
so...
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First
-------------------------------------------------------------
#!/usr/bin/env python
#Get the IP Address
print("hello, please enter file name here>"),
import socket
for line in open(raw_input()):
hostname = line.strip()
print("IP address for {0} is
{1}.".format(hostname,socket.gethostbyname(hostname)))
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second
------------------------------------------------------------
#!/usr/bin/env python
#Get the IP Address
import os
print("Hello, please enter file name here>"),
FILENAME = raw_input()
if os.path.isfile(FILENAME):
print("\nFile Exist!")
print("\nGetting ip from host name")
print("\n")
import socket
for line in open (FILENAME):
hostname = line.strip()
print("IP address for {0} is
{1}.".format(hostname,socket.gethostbyname(hostname)))
else:
print ("\nFinished the operation")
else:
print ("\nFIle is missing or is not reasable"),
~
Comparing these, the first one wins if you catch and process exceptions.
It is easier to ask for forgiveness than to get permission (EAFP,
http://en.wikipedia.org/wiki/EAFP).
Bit I wonder that no one has mentionned that
socket.gethostbyname(hostname) is quite old-age because it only returns
IPv4 addresses (resp. only one of them).
OTOH, socket.getaddrinfo(hostname, 0, 0, socket.SOCK_STREAM) gives you a
list of parameter tuples for connecting.
So which way you go above, you should change the respective lines to
for line in ...:
hostname = line.strip()
for target in socket.getaddrinfo(hostname, 0, socket.AF_UNSPEC,
socket.SOCK_STREAM):
print("IP address for {0} is {1}.".format(hostname,
target[4][0]))
Thomas
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