Bytes are already distinct from text, so typed=True isn't necessary.

rhettinger · rhettinger · commit ded203f7c9d3 · 2011-10-20T09:42:05.000-07:00
diff --git a/Lib/fnmatch.py b/Lib/fnmatch.py
@@ -35,7 +35,7 @@ def fnmatch(name, pat):
     pat = os.path.normcase(pat)
     return fnmatchcase(name, pat)
 
-@functools.lru_cache(maxsize=250, typed=True)
+@functools.lru_cache(maxsize=250)
 def _compile_pattern(pat):
     if isinstance(pat, bytes):
         pat_str = str(pat, 'ISO-8859-1')
