[Tutor] Exception Handling

Nym City nymcity at yahoo.com
Sat Oct 3 20:17:20 CEST 2015


Thank you (Cameron and Alan) for your review and feedback. This solved the issue perfectly! 
 Thank you. 


     On Friday, October 2, 2015 11:49 PM, Cameron Simpson <cs at zip.com.au> wrote:
   
 

 On 03Oct2015 00:51, ALAN GAULD <alan.gauld at btinternet.com> wrote:
>On 02/10/15 23:57, Nym City via Tutor wrote:
>>socket.gaierror: [Errno 11004] getaddrinfo failed
>...
>>for name in ListOfHostNames:
>>    try:
>>        ResolveHostname = socket.gethostbyname(name)
>>        print(ResolveHostname)
>>        newFile.write(ResolveHostname + "\n")
>>        print(ResolveHostname)
>>    except socket.herror as e:
>>        newFile.write("No resolution available for %s" % (name) + "\n")
>
>You are catching herror but your code is resulting in gaierror.
>
>Add socket.gaierror to your except line.
>
>    except (socket.herror, socket.gaierror):
>        newFile.write("No resolution available for %s" % (name) + "\n")
>
>see if that works

Just a followon remark: always try to print the exception when you're not 
certain of what it will be or what to do with it. So I'd augument Alan's code 
like this:

    except (socket.herror, socket.gaierror) as e:
        newFile.write("No resolution available for %s: %s" % (name, e) + "\n")

Cheers,
Cameron Simpson <cs at zip.com.au>
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