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Upgrade to release 20.3.0:
- attr.define(), attr.frozen(), attr.mutable(), and attr.field()
remain provisional.
- attr.s() now has a field_transformer hook that is called for all
Attributes and returns a (modified or updated) list of Attribute
instances. attr.asdict() has a value_serializer hook that can
change the way values are converted. Both hooks are meant to
help with data (de-)serialization workflows.
- kw_only=True now works on Python 2.
- raise from now works on frozen classes on PyPy.
- attr.asdict() and attr.astuple() now treat frozensets like sets
with regards to the retain_collection_types argument.
- The type stubs for attr.s() and attr.make_class() are not
missing the collect_by_mro argument anymore.
Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Acked-by: Trevor Gamblin <trevor.gamblin@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
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