Dnspython is a DNS toolkit for Python. It can be used for queries, zone transfers, dynamic updates, nameserver testing, and many other things.

Dnspython provides both high and low level access to the DNS. The high level classes perform queries for data of a given name, type, and class, and return an answer set. The low level classes allow direct manipulation of DNS zones, messages, names, and records. Almost all RR types are supported.

dnspython originated at Nominum where it was developed for testing DNS nameservers.

Snimpy is aimed at being the more Pythonic possible. You should forget that you are doing SNMP requests. Snimpy will rely on MIB to hide SNMP details. Here are some "features":

MIB parser based on libsmi (through CFFI)
SNMP requests are handled by PySNMP (SNMPv1, SNMPv2 and SNMPv3 support)
scalars are just attributes of your session object
columns are like a Python dictionary and made available as an attribute
getting an attribute is like issuing a GET method
setting an attribute is like issuing a SET method
iterating over a table is like using GETNEXT
when something goes wrong, you get an exception