irc: MyInfo namedtuple with proper type hint

sopel/irc/utils.py

@@ -3,7 +3,7 @@
 # Licensed under the Eiffel Forum License 2.
 from __future__ import generator_stop
 
-import collections
+from typing import NamedTuple
 
 from dns import rdtypes, resolver
 
@@ -104,13 +104,14 @@ def module(self):
         return self.plugin
 
 
-class MyInfo(collections.namedtuple('MyInfo', MYINFO_ARGS)):
+class MyInfo(NamedTuple):
     """Store client, servername, and version from ``RPL_MYINFO`` events.
 
     .. seealso::
 
         https://modern.ircdocs.horse/#rplmyinfo-004
 
     """
-    # TODO: replace by a class using typing.NamedTuple (new in Python 3.5+)
-    # probably in Sopel 8.0 (due to drop most old Python versions)
+    client: str
+    servername: str
+    version: str