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-rw-r--r--Doc/tutorial/classes.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst
index 83b7db7..7d3b823 100644
--- a/Doc/tutorial/classes.rst
+++ b/Doc/tutorial/classes.rst
@@ -703,6 +703,11 @@ breaking intraclass method calls. For example::
for item in zip(keys, values):
self.items_list.append(item)
+The above example would work even if ``MappingSubclass`` were to introduce a
+``__update`` identifier since it is replaced with ``_Mapping__update`` in the
+``Mapping`` class and ``_MappingSubclass__update`` in the ``MappingSubclass``
+class respectively.
+
Note that the mangling rules are designed mostly to avoid accidents; it still is
possible to access or modify a variable that is considered private. This can
even be useful in special circumstances, such as in the debugger.