Killed the <> operator.  You must now use !=.

Opportunistically also fixed one or two places where '<> None' should be
'is not None' and where 'type(x) <> y' should be 'not isinstance(x, y)'.
diff --git a/Lib/wsgiref/util.py b/Lib/wsgiref/util.py
index 17fdff6..450a32f 100644
--- a/Lib/wsgiref/util.py
+++ b/Lib/wsgiref/util.py
@@ -98,7 +98,7 @@
         return None
 
     path_parts = path_info.split('/')
-    path_parts[1:-1] = [p for p in path_parts[1:-1] if p and p<>'.']
+    path_parts[1:-1] = [p for p in path_parts[1:-1] if p and p != '.']
     name = path_parts[1]
     del path_parts[1]