- Implement BidirectionalMapping.__subclasshook__ in terms of
Mapping.__subclasshook__ to simplify and correct its implementation.
- Add new test_class_relationships.py tests.
- Import collections ABCs from .compat. Importing them directly from
collections was deprecated and will stop working in Python 3.8.
In Python 2 collections.abc does not exist.
- rename util.py -> _util.py
- Refactor _dedup_item, _write_item, and _undo_write methods to use
higher-level abstractions (_DedupResult and _WriteResult classes).
- Add internal _OnDup class to bundle (on_dup_key, on_dup_val, on_dup_kv)
together into a single abstraction. Signatures of methods like _put and
_update are cleaner as a result.
- Add the "_NOOP" _DedupResult abstraction.
- Make _Marker extend namedtuple, no need for it to be mutable.
- Enable the pylint messages that were disabled now that the code is cleaner.
- Make DuplicationPolicy extend _Marker and make RAISE, OVERWRITE, and
IGNORE instances of DuplicationPolicy once again. This time deprecate
access via DuplicationPolicy.(IGNORE|RAISE|OVERWRITE) to prevent
infinite chaining.
- Misc. code and docs improvements.
- Use __slots__ to speed up attribute access and decrease memory usage
(adding _SlotPickleMixin to preserve pickleability)
- "Code review nav" comments
- Remove _clear from frozenbidict, leaving only the public `clear` methods on
the mutable bidict types. Much clearer now! (ducks)
- Improve `pop` and `popitem` signatures. No need for them to take *args/**kw.
- Make bidict extend MutableMapping directly rather than registering it as a
virtual subclass. Leave a comment explaining that it inherits
MutableMapping's setdefault implementation now that it isn't added manually.
- Make the DuplicationPolicy class just a namespace holding
RAISE, OVERWRITE, and IGNORE, not a _Marker itself.
Make RAISE, OVERWRITE, and IGNORE just _Markers, not `DuplicationPolicy`s.
- Various other code and docs improvements.
- Make :func:`bidict.FrozenOrderedBidict.__iter__` slightly more efficient.
- :func:`~bidict.frozenbidict.__repr__` no longer dynamically checks
for a ``__reversed__`` method to determine whether to use an ordered or
unordered ``__repr__`` delegate. Now it always just calls the new
:func:`~bidict.frozenbidict.__repr_delegate__` instead, which may be
explicitly overridden as needed.
jab