Problem with python > 3.8 and MutableMapping

[Te-k]

On my computer with python 3.10.4 with dnsdb 0.2.5

> from dnsdb import Dnsdb
File ~/env/default3/lib/python3.10/site-packages/diskcache/persistent.py:8, in <module>
      5 import operator as op
      6 import sys
----> 8 from collections import MutableMapping, OrderedDict, Sequence
      9 from collections import KeysView, ValuesView, ItemsView
     10 from itertools import islice

ImportError: cannot import name 'MutableMapping' from 'collections' (/usr/lib/python3.10/collections/__init__.py)

On python > 3.8, you need to import MutableMapping fromcollections.abc (ref). This code should solve the issue :

import sys

if sys.version_info[:2] >= (3, 8):
    from collections.abc import MutableMapping
else:
    from collections import MutableMapping

[Te-k]

My bad, I realize it is actually an issue with diskcache, dnsdb 0.2.5 requires diskcache<4.0,>=3.1, but you have diskcache 5.4.0 which is incompatible.. So upgrading diskcache should solve the issue (but may create other problems with changes in the API)