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Added to the description: mention of and links to dict, list, and tuple,
and mention of bsddb.btopen().
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.. versionadded:: 2.4
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.. versionadded:: 2.4
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This module implements high-performance container datatypes. Currently, there
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This module implements high-performance container datatypes. Currently,
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are two datatypes, deque and defaultdict, and one datatype factory function,
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there are two datatypes, :class:`deque` and :class:`defaultdict`, and
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:func:`NamedTuple`. Future additions may include balanced trees and ordered
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one datatype factory function, :func:`NamedTuple`. Python already
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dictionaries.
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includes built-in containers, :func:`dict`, :func:`list`, and
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:func:`tuple`. The optional :mod:`bsddb` module has a :meth:`btopen`
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method that can be used to create in-memory or file based ordered
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dictionaries with string keys.
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Future editions of the standard library may include balanced trees and
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ordered dictionaries.
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.. versionchanged:: 2.5
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.. versionchanged:: 2.5
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Added defaultdict.
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Added defaultdict.
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