- update to 17.2.0:
- Validators are hashable again.
- ``attrs`` will set the ``__hash__()`` method to ``None`` by default now.
The way hashes were handled before was in conflict with `Python's
specification
This *may* break some software although this breakage is most likely just
surfacing of latent bugs.
You can always make ``attrs`` create the ``__hash__()`` method using
``@attr.s(hash=True)``. See `#136`_ for the rationale of this change.
- Correspondingly, ``attr.ib``'s ``hash`` argument is ``None`` by default too
and mirrors the ``cmp`` argument as it should.
- ``attr.assoc()`` is now deprecated in favor of ``attr.evolve()`` and will
stop working in 2018.
- Fix default hashing behavior.
Now *hash* mirrors the value of *cmp* and classes are unhashable by default.
- Added ``attr.evolve()`` that, given an instance of an ``attrs`` class and
field changes as keyword arguments, will instantiate a copy of the given
instance with the changes applied.
- ``FrozenInstanceError`` is now raised when trying to delete an attribute
from a frozen class.
- Frozen-ness of classes is now inherited.
- ``__attrs_post_init__()`` is now run if validation is disabled.
- Added ``attr.validators.in_(options)`` that, given the allowed `options`,
checks whether the attribute value is in it.
This can be used to check constants, enums, mappings, etc.
- Added ``attr.validators.and_()`` that composes multiple validators into one.
- For convenience, the ``validator`` argument of ``@attr.s`` now can take a
``list`` of validators that are wrapped using ``and_()``.
- Accordingly, ``attr.validators.optional()`` now can take a ``list`` of
validators too.
OBS-URL: https://build.opensuse.org/request/show/507963
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-attrs?expand=0&rev=6
Dirk Mueller
8828b357c3