8000 gh-90562: Mention slots pitfall in dataclass docs by thejcannon · Pull Request #107391 · python/cpython · GitHub
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gh-90562: Mention slots pitfall in dataclass docs #107391

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Merged
merged 10 commits into from
May 21, 2024
5 changes: 4 additions & 1 deletion Doc/library/dataclasses.rst
Original file line number Diff line number Diff line change
Expand Up @@ -185,7 +185,10 @@ Module contents
- ``slots``: If true (the default is ``False``), :attr:`~object.__slots__` attribute
will be generated and new class will be returned instead of the original one.
If :attr:`~object.__slots__` is already defined in the class, then :exc:`TypeError`
is raised.
is raised. Calling no-arg ``super()`` in dataclasses using ``slots=True`` will result in
the following Exception being raised:
``TypeError: super(type, obj): obj must be an instance or subtype of type``.
The two-arg ``super()`` is a valid workaround. See :issue:`46404` for full details.
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We should try to capture everything relevant in the documentation -- what is relevant to the reader from the linked issue that isn't captured in your summary?

A

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6F6B

I think these two points are it. What to look for and how to workaround.


.. versionadded:: 3.10

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