How to handle errors?

[Wildman]

On Thu, 20 Oct 2016 12:48:28 -0700, SS wrote:

> The following script works fine:
> 
> #!/bin/python
> 
> import socket
> 
> str = raw_input("Enter a domain name: ");
> print "Your domain is ", str
> print socket.gethostbyname(str)
> 
> You provide it a hostname, it provides an IP.  That works fine.  But I need a way to handle errors.  For example:
> 
> [root at bart /]# ./dataman.py
> Enter a domain name: aslfhafja
> Your domain is  aslfhafja
> Traceback (most recent call last):
>   File "./dataman.py", line 7, in <module>
>     print socket.gethostbyname(str)
> socket.gaierror: [Errno -2] Name or service not known
> [root at bart /]#
> 
> I would like to be able to handle that error a bit better.  Any ideas?
> 
> TIA.

#!/usr/bin/env python

import socket

def get_ip(url):
    try:
        ip = socket.gethostbyname(url)
        return ip
    except socket.gaierror:
        return "***ERROR***\nUnknown domain name!"

domain = raw_input("Enter a domain name: ");
print "Your domain is ", domain
print get_ip(domain)

-- 
<Wildman> GNU/Linux user #557453
The cow died so I don't need your bull!