Set that remembers original insertion order.
Runs on Py2.5 or later (and runs on 3.0 or later without any modifications). For Python2.5, a local backport of ABC classes is also used.
Implementation based on a doubly linked link and an internal dictionary. This design gives OrderedSet the same big-Oh running times as regular sets including O(1) adds, removes, and lookups as well as O(n) iteration.
Import and create ordered set.
>>> from oset import oset >>> os = oset()
- Python 2.5+
- Raymond Hettinger, 19 Mar 2009
- Raymond Hettinger, (All kudos to him :)
- Carlos Martin <email@example.com>
under the Python Software Foundation License. License =======
Copyright (c) 2009, Raymond Hettinger, and others All rights reserved.
Package structured based on the one developed to odict Copyright (c) 2010, BlueDynamics Alliance, Austria
- 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 BlueDynamics Alliance nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
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