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-rw-r--r--Lib/types.py14
1 files changed, 13 insertions, 1 deletions
diff --git a/Lib/types.py b/Lib/types.py
index db63c96e5e..5a89ad14fd 100644
--- a/Lib/types.py
+++ b/Lib/types.py
@@ -84,4 +84,16 @@ EllipsisType = type(Ellipsis)
DictProxyType = type(TypeType.__dict__)
NotImplementedType = type(NotImplemented)
-del sys, _f, _g, _C # Not for export
+# Extension types defined in a C helper module. XXX There may be no
+# equivalent in implementations other than CPython, so it seems better to
+# leave them undefined then to set them to e.g. None.
+try:
+ import _types
+except ImportError:
+ pass
+else:
+ GetSetDescriptorType = type(_types.Helper.getter)
+ MemberDescriptorType = type(_types.Helper.member)
+ del _types
+
+del sys, _f, _g, _C, # Not for export