Requirements

• Python 3.3+ (should work on Python 2.6+ as well, as well as PyPy 2.0+)

• nose>=1.30 for running unittests

Usage

Using it looks like:

>>> import skiplist
>>> skip = skiplist.Skiplist()
>>> len(skip)
0
>>> 6 in skip
False
>>> skip.insert(0)
>>> skip.insert(7)
>>> skip.insert(3)
>>> skip.insert(6)
>>> skip.insert(245)
>>> len(skip)
5
>>> 6 in skip
True
>>> skip.remove(245)
>>> len(skip)
4
>>> skip.find(3)
<Skiplist: 3>

Performance

Performance is alright, though I’m sure there’s room for improvement. See the bench.py script for more information.

Running Tests

Run pip install nose (preferrably within a virtualenv) to install nose.

Then run nosetests -s -v tests.py to exercise the full suite.

TODO

• A more performant implementation of remove (still O(N))

• More performance testing

  • Loading data seems slow

Meta

author:

Daniel Lindsley

license:

BSD

version:

0.9.0