Remove references to ClassType.

third_party/stdlib/abc.py

@@ -104,7 +104,7 @@ class ABCMeta(type):
 
     def register(cls, subclass):
         """Register a virtual subclass of an ABC."""
-        if not isinstance(subclass, (type, types.ClassType)):
+        if not isinstance(subclass, type):
             raise TypeError("Can only register classes")
         if issubclass(subclass, cls):
             return  # Already a subclass

third_party/stdlib/warnings.py

@@ -80,8 +80,7 @@ def filterwarnings(action, message="", category=Warning, module="", lineno=0,
     assert action in ("error", "ignore", "always", "default", "module",
                       "once"), "invalid action: %r" % (action,)
     assert isinstance(message, basestring), "message must be a string"
-    assert isinstance(category, (type, types.ClassType)), \
-           "category must be a class"
+    assert isinstance(category, type), "category must be a class"
     assert issubclass(category, Warning), "category must be a Warning subclass"
     assert isinstance(module, basestring), "module must be a string"
     assert isinstance(lineno, int) and lineno >= 0, \