8000 Update pickle.rst by geryogam · Pull Request #14128 · python/cpython · GitHub
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Merged
merged 3 commits into from
Aug 7, 2019
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Update pickle.rst #14128

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23fb530
Update pickle.rst
geryogam Jun 16, 2019
4d7745f
Update pickle.rst
geryogam Jun 16, 2019
38fe87d
Update pickle.rst
geryogam Jun 16, 2019
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Update pickle.rst
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@geryogam
geryogam authored Jun 16, 2019
commit 4d7745fa961f43999316908c02c26c8f838054aa
6 changes: 3 additions & 3 deletions Doc/library/pickle.rst
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Expand Up @@ -719,13 +719,13 @@ alphanumeric characters (for protocol 0) [#]_ or just an arbitrary object (for
any newer protocol).

The resolution of such persistent IDs is not defined by the :mod:`pickle`
module; it will delegate this resolution to the user defined methods on the
module; it will delegate this resolution to the user-defined methods on the
pickler and unpickler, :meth:`~Pickler.persistent_id` and
:meth:`~Unpickler.persistent_load` respectively.

To pickle objects that have an external persistent id, the pickler must have a
To pickle objects that have an external persistent ID, the pickler must have a
custom :meth:`~Pickler.persistent_id` method that takes an object as an
argument and returns either ``None`` or the persistent id for that object.
argument and returns either ``None`` or the persistent ID for that object.
When ``None`` is returned, the pickler simply pickles the object as normal.
When a persistent ID string is returned, the pickler will pickle that object,
along with a marker so that the unpickler will recognize it as a persistent ID.
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