10000 bpo-43905: Expand dataclasses.astuple() and asdict() docs by akulakov · Pull Request #26154 · python/cpython · GitHub
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bpo-43905: Expand dataclasses.astuple() and asdict() docs #26154

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Merged
merged 8 commits into from
Nov 29, 2021
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bpo-43905: Expand dataclasses.astuple() and asdict() docs #26154

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75a6626
Update dataclasses.rst
akulakov May 15, 2021
1b80a7a
Moved 'deepcopy' sentence to the first paragraph.
akulakov May 24, 2021
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📜🤖 Added by blurb_it.
blurb-it[bot] May 24, 2021
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fix trailing whitespace
akulakov Nov 29, 2021
f0e5b87
fix one more trailing space
akulakov Nov 29, 2021
f9f2734
added deepcopy note and workaround to `asdict`
akulakov Nov 29, 2021
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remove tildes in links
akulakov Nov 29, 2021
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update news
akulakov Nov 29, 2021
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Moved 'deepcopy' sentence to the first paragraph.
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@akulakov
akulakov authored May 24, 2021
commit 1b80a7a52789fd41e7f8a5810112447042a0637a
7 changes: 3 additions & 4 deletions Doc/library/dataclasses.rst
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Expand Up @@ -349,16 +349,15 @@ Module contents
Converts the dataclass ``instance`` to a tuple (by using the
factory function ``tuple_factory``). Each dataclass is converted
to a tuple of its field values. dataclasses, dicts, lists, and
tuples are recursed into.
tuples are recursed into. Other objects are copied with
:func:`copy.deepcopy`.

Continuing from the previous example::

assert astuple(p) == (10, 20)
assert astuple(c) == ([(0, 0), (10, 4)],)

The tuple is a :func:`copy.deepcopy` of contained objects, which may
be an issue in some corner cases. To create a shallow copy, the
following workaround may be used::
To create a shallow copy, the following workaround may be used::

tuple(getattr(instance, field.name) for field in dataclasses.fields(instance))

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