SortedCollections is an Apache2 licensed Python sorted collections library.


  • Pure-Python
  • Depends on the SortedContainers module.
  • ValueSortedDict - Dictionary with (key, value) item pairs sorted by value.
  • ItemSortedDict - Dictionary with key-function support for item pairs.
  • OrderedDict - Ordered dictionary with numeric indexing support.
  • OrderedSet - Ordered set with numeric indexing support.
  • IndexableDict - Dictionary with numeric indexing support.
  • IndexableSet - Set with numeric indexing support.
  • SegmentList - List with fast random access insertion and deletion.
  • 100% code coverage testing.
  • Tested on CPython 2.6, 2.7, 3.2, 3.3, 3.4, 3.5, and 3.6.
  • Tested on PyPy and PyPy3.


Installing SortedCollections is simple with pip:

$ pip install sortedcollections

You can access documentation in the interpreter with Python’s built-in help function:

>>> from sortedcollections import ValueSortedDict
>>> help(ValueSortedDict)

SortedCollections License

Copyright 2015-2016 Grant Jenks

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.