1. Alexis Petrounias
  2. python-restorable-collections

Overview

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Python Restorable Collections

Pickleable wrappers for Python collections with non-built-in type keys and cycles or self-references.

Interfaces to collections which solve the problem of unpickleable objects when non-built-in type keys are used and form cycles, either mutually or through self-reference.

A detailed article explaining the problem and this solution will soon be available at: http://www.petrounias.org/articles/

Version 1.0.0

Documentation: https://python-restorable-collections.readthedocs.org/en/latest/

Prerequisites

Core:

  • Python >= 2.7

Obtaining

Installation

Via setup tools:

python setup.py install

Via pip and pypi:

pip install python-restorable-collections

Usage

Import the collections wrappers from the restorable_collections module.

from restorable_collections import RestorableDict

and use it instead of the corresponding Python object:

self.foo = RestorableDict()
self.foo[self] = 42

Release Notes

  • v1.0.0 @ 7 Sep 2014 Initial public release.

Development Status

Actively developed and maintained since 2014. Currently used in production in proprietary projects by the author and his team, as well as other third parties.

Future Work

  • Support for non-standard collections, specifically OrderedSet and OrderedDefaultDict.

Contributors

Written and maintained by Alexis Petrounias < http://www.petrounias.org/ >.

License

Released under the OSI-approved BSD license.

Copyright (c) 2014 Alexis Petrounias < www.petrounias.org >, all rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.