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bidict v0.17.4 Release Notes

Release Date: 2018-11-14 // over 5 years ago

  • Minor code, interop, and (semi-)private API improvements.

    • :class:~bidict.OrderedBidict optimizations and code improvements.

    Use bidict\s for the backing _fwdm and _invm mappings, obviating the need to store key and value data in linked list nodes.

    • 🔨 Refactor proxied- (i.e. delegated-) to-_fwdm logic for better composability and interoperability.

    Drop the _Proxied* mixin classes and instead move their methods into :class:~bidict.BidictBase, which now checks for an object defined by the BidictBase.__delegate__ attribute. The BidictBase.__delegate__ object will be delegated to if the method is available on it, otherwise a default implementation (e.g. inherited from :class:~collections.abc.Mapping) will be used otherwise. Subclasses may set __delegate__ = None to opt out.

    Consolidate _MutableBidict into :class:bidict.bidict now that the dropped mixin classes make it unnecessary.

    • Change __repr_delegate__ to simply take a type like :class:dict or :class:list.

    • ⬆️ Upgrade to latest major sortedcontainers <https://github.com/grantjenks/python-sortedcontainers>__ version (from v1 to v2) for the :ref:extending:\`SortedBidict`` Recipes`.

    • bidict.compat.{view,iter}{keys,values,items} on Python 2 no longer assumes the target object implements these methods, as they're not actually part of the :class:~collections.abc.Mapping interface, and provides fallback implementations when the methods are unavailable. This allows the :ref:extending:\`SortedBidict`` Recipes` to continue to work with sortedcontainers v2 on Python 2.