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From: Chris Angelico <rosuav@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: asyncio - run coroutine in the background
Date: Sun, 21 Feb 2016 08:47:28 +1100
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On Sun, Feb 21, 2016 at 4:45 AM, Martin A. Brown <martin@linux-ip.net> wrote:
> Another (non-Python) DNS name lookup library that does practically
> the same thing (along with the shortcomingsn you mentioned, Chris:
> no NSS nor /etc/hosts) is the adns library.  Well, it is DNS, after
> all.
>
>   http://www.gnu.org/software/adns/
>   https://pypi.python.org/pypi/adns-python/1.2.1
>
> And, there are Python bindings.  I have been quite happy using the
> adns tools (and tools built on the Python bindings) for mass lookups
> (millions of DNS names).  It works very nicely.
>
> Just sharing knowledge of an existing tool,
>

Ultimately, anything that replaces a gethostbyname/getaddrinfo call
with an explicit DNS lookup is going to have the exact same benefit
and downside: lookups won't freeze the program, but you can't use
/etc/hosts any more. (Slightly sloppy language but that's how an end
user will see it.)

ChrisA