Eric Snow's implementation of PEP 421.
Issue 14673: Add sys.implementation
diff --git a/Include/namespaceobject.h b/Include/namespaceobject.h
new file mode 100644
index 0000000..a412f05
--- /dev/null
+++ b/Include/namespaceobject.h
@@ -0,0 +1,17 @@
+
+/* simple namespace object interface */
+
+#ifndef NAMESPACEOBJECT_H
+#define NAMESPACEOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+PyAPI_DATA(PyTypeObject) _PyNamespace_Type;
+
+PyAPI_FUNC(PyObject *) _PyNamespace_New(PyObject *kwds);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !NAMESPACEOBJECT_H */