return from function

[Denis McMahon]

On Sun, 20 Dec 2015 12:34:40 +0000, Emil Natan wrote:

> I'm completely new to Python.

>     parent_domain = domainname.partition('.')[2]
>     try:
>         print('Test for parent domain %s' % parent_domain)
>         z = dns.resolver.query(parent_domain, 'SOA')
>         print('the parent domain we use is: %s' % parent_domain)
>         return parent_domain
>     except dns.resolver.NXDOMAIN:
>         print('NXDOMAIN: invoke find_parent_domain recursively')
>         find_parent_domain(parent_domain)

None is being returned in this case!

>     except dns.resolver.NoAnswer:
>         print('NoAnswer: invoke find_parent_domain recursively')
>         find_parent_domain(parent_domain)

And in this case.

Do you want to return None in the NXDOMAIN and NoAnswer cases? If not, a 
return statement might help in returning a value.

When you recurse back into a function you still need to return the result 
of the recursion.

-- 
Denis McMahon, denismfmcmahon at gmail.com