Update mypy

add some type info to APEv2File._Info to make mypy happy

Author: lazka

mutagen/apev2.py

@@ -31,6 +31,7 @@
 
 import sys
 import struct
+from typing import Type
 from io import BytesIO
 from collections.abc import MutableSequence
 
@@ -678,6 +679,18 @@ def pprint(self):
         return u"[External] %s" % self.value
 
 
+class _UnknownInfo(StreamInfo):
+    length = 0
+    bitrate = 0
+
+    def __init__(self, fileobj):
+        pass
+
+    @staticmethod
+    def pprint():
+        return u"Unknown format with APEv2 tag."
+
+
 class APEv2File(FileType):
     """APEv2File(filething)
 
@@ -688,16 +701,7 @@ class APEv2File(FileType):
         tags (`APEv2`)
     """
 
-    class _Info(StreamInfo):
-        length = 0
-        bitrate = 0
-
-        def __init__(self, fileobj):
-            pass
-
-        @staticmethod
-        def pprint():
-            return u"Unknown format with APEv2 tag."
+    _Info: Type[StreamInfo] = _UnknownInfo
 
     @loadfile()
     def load(self, filething):

pyproject.toml

@@ -31,7 +31,7 @@ dev = [
     "pytest~=8.2",
     "hypothesis>=6.50.1,<7",
     "flake8>=7.1.0,<8",
-    "mypy==1.15.0",
+    "mypy==1.18.2",
     "coverage>=7.2.5,<8",
     "setuptools>=77.0.0,<78",
 ]