[Tutor] Socket Module

[Nym City]

Thank you for your response. I gave it another try:
As suggested, first I ran the concept just in the terminal, and it worked fine:
>>> names =['173.252.120.6', '98.139.183.24']
>>> import socket
>>> for name in names:
    socket.gethostbyaddr(name)
    print(name)
  
output:  
('edge-star-shv-12-frc3.facebook.com', [], ['173.252.120.6'])
('ir2.fp.vip.bf1.yahoo.com', [], ['98.139.183.24'])
However, when I run it in a program, from a CSV file, it just outputs the content of the CSV file without running it thought socket.gethostbyaddr():
import csv
import socket

domains = []

with open('top500ips.csv', 'r') as f:
    for line in f:
        line = line.strip()
        domains.append(line)

for name in domains:
    socket.gethostbyaddr(name)
    print(name)
output: 
173.252.120.6
98.139.183.24

What am I missing? Thank in advance.
 Thank you. 


     On Saturday, July 18, 2015 7:09 PM, Danny Yoo <danny.yoo at gmail.com> wrote:
   
 

 
On Jul 18, 2015 3:50 PM, "Nym City via Tutor" <tutor at python.org> wrote:
>
> Thank you all for your responses. I have a follow up question:
>
> So if gethostbyname_ex() takes only a single hostname string, how can I use it to go through a list of hostnames and get their IP resolution as an output?
>
Look into loops.  If you have a function that works on a single thing, you can use a loop to apply that function for each element in a list.  Any good tutorial should show how to do this.Let us know if you run into difficulties.