Cache a bunch of type calls

1 files changed, 8 insertions, 5 deletions

diff --git a/astroid/raw_building.py b/astroid/raw_building.py
index c29cd2a3..d9a1dc47 100644
--- a/astroid/raw_building.py
+++ b/astroid/raw_building.py
@@ -34,6 +34,9 @@ MANAGER = manager.AstroidManager()
 
 _CONSTANTS = tuple(node_classes.CONST_CLS)
 _BUILTINS = vars(builtins)
+TYPE_NONE = type(None)
+TYPE_NOTIMPLEMENTED = type(NotImplemented)
+TYPE_ELLIPSIS = type(...)
 
 
 def _io_discrepancy(member):
@@ -390,13 +393,13 @@ def _astroid_bootstrapping():
 
     # pylint: disable=redefined-outer-name
     for cls, node_cls in node_classes.CONST_CLS.items():
-        if cls is type(None):
+        if cls is TYPE_NONE:
             proxy = build_class("NoneType")
             proxy.parent = astroid_builtin
-        elif cls is type(NotImplemented):
+        elif cls is TYPE_NOTIMPLEMENTED:
             proxy = build_class("NotImplementedType")
             proxy.parent = astroid_builtin
-        elif cls is type(...):
+        elif cls is TYPE_ELLIPSIS:
             proxy = build_class("Ellipsis")
             proxy.parent = astroid_builtin
         else:
@@ -428,8 +431,8 @@ def _astroid_bootstrapping():
         types.GetSetDescriptorType,
         types.GeneratorType,
         types.MemberDescriptorType,
-        type(None),
-        type(NotImplemented),
+        TYPE_NONE,
+        TYPE_NOTIMPLEMENTED,
         types.FunctionType,
         types.MethodType,
         types.BuiltinFunctionType,