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Project Description

A priority queue dictionary maps hashable objects (keys) to priority-determining values. It provides a hybrid dictionary/priority queue API.

Works with Python 2.7+, 3.3+, and PyPy.

The priority queue is implemented as a binary heap of (key, priority value) pairs, which supports:

  • O(1) search for the item with highest priority
  • O(log n) removal of the item with highest priority
  • O(log n) insertion of a new item

Additionally, an index maps elements to their location in the heap and is kept up to date as the heap is manipulated. As a result, pqdict also supports:

  • O(1) lookup of any item by key
  • O(log n) removal of any item
  • O(log n) updating of any item’s priority level

Documentation

Documentation is available at http://pqdict.readthedocs.org/en/latest/.

License

This module is released under the MIT license. The augmented heap implementation was adapted from the heapq module in the Python standard library, which was written by Kevin O’Connor and augmented by Tim Peters and Raymond Hettinger.

Release History

Release History

1.0.0

This version

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0.5

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0.4

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0.3

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Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

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0.2

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0.1

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pqdict-1.0.0-py2.py3-none-any.whl (8.3 kB) Copy SHA256 Checksum SHA256 3.4 Wheel Sep 2, 2015
pqdict-1.0.0.tar.gz (82.0 kB) Copy SHA256 Checksum SHA256 Source Sep 2, 2015

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