Question

For a url entered by the user :

check that is any webserver hosting the domain name or not ?

For example :

url='laksjdfaksdfjajdfaljewoifjadslkjflkasjrlwkejk.com'

Now, the above url does-not exists, so there is no point of check for any HTTP error codes since, no server is there that will reply back.

So, how to detect such url ?

isServerUp() ?

Answer 1

This should open the url for you; obviously change how you want to say that the url has failed to open. The docs are: http://docs.python.org/library/urllib2.html

from urllib2 import *

req = Request(url)

# Try to open the url
try: 
    reponse = urlopen(req)
except HTTPError, e:
    url = None
except URLError, e:
    url = None

EDIT: Indentation fixed