An Ordered Set implementation in Cython. Based on Raymond Hettinger's OrderedSet recipe.
Example:
>>> from orderedset import OrderedSet
>>> oset = OrderedSet([1, 2, 3])
>>> oset
OrderedSet([1, 2, 3])
>>> oset | [5, 4, 3, 2, 1]
OrderedSet([1, 2, 3, 5, 4])- Free software: BSD license
- Documentation: http://orderedset.rtfd.org.
- Works like a regular set, but remembers insertion order;
- Is approximately 5 times faster than the pure Python implementation overall (and 5 times slower than set);
- Compatible with Python 2.7 through 3.8;
- Supports the full set interface;
- Supports some list methods, like index and __getitem__.
- Supports set methods against iterables.