Fix numbered list syntax in programming.rst (#130158)

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Rafael Fontenelle 2025-04-05 16:20:21 -03:00 committed by GitHub
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@ -1868,15 +1868,15 @@ object identity is assured. Generally, there are three circumstances where
identity is guaranteed:
1) Assignments create new names but do not change object identity. After the
assignment ``new = old``, it is guaranteed that ``new is old``.
assignment ``new = old``, it is guaranteed that ``new is old``.
2) Putting an object in a container that stores object references does not
change object identity. After the list assignment ``s[0] = x``, it is
guaranteed that ``s[0] is x``.
change object identity. After the list assignment ``s[0] = x``, it is
guaranteed that ``s[0] is x``.
3) If an object is a singleton, it means that only one instance of that object
can exist. After the assignments ``a = None`` and ``b = None``, it is
guaranteed that ``a is b`` because ``None`` is a singleton.
can exist. After the assignments ``a = None`` and ``b = None``, it is
guaranteed that ``a is b`` because ``None`` is a singleton.
In most other circumstances, identity tests are inadvisable and equality tests
are preferred. In particular, identity tests should not be used to check