MNT: do not import ABC directly from collections

diff --git a/dns/namedict.py b/dns/namedict.py
index f44cf6f9752934fe71fa710bfa56afcfa2aed585..0e1103f7964a6f4861f9fe8a6c8d38fbd42747f4 100644 (file)
--- a/dns/namedict.py
+++ b/dns/namedict.py
@@ -27,11 +27,14 @@
 
 """DNS name dictionary"""
 
-import collections
+try:
+    from collections.abc import MutableMapping
+except ImportError:
+    from collections import MutableMapping
 import dns.name
 
 
-class NameDict(collections.MutableMapping):
+class NameDict(MutableMapping):
     """A dictionary whose keys are dns.name.Name objects.
 
     In addition to being like a regular Python dictionary, this