pyinter 0.2.0

An interval package for Python.

Pyinter is a small and simple library written in Python for performing interval and discontinous range arithmetic.

>>> pyinter.openclosed(1.1, 12)
(1.1, 12]
>>> discontinous_range = pyinter.IntervalSet([pyinter.closedopen(5, 10), pyinter.closed(22, 23)])
>>> discontinous_range
IntervalSet([5, 10), [22, 23])
>>> 7 in discontinous_range
True
>>> 10 in discontinous_range
False  # This isn't in the range as it is an open interval which doesn't include its end points

Features

• interval objects which can be
  • unioned
  • intersected
  • easily constructed using helper functions: open, closed, openclosed and closedopen
• interval sets which can be
  • unioned
  • intersected

Installation

To install Pyinter, simply:

$ pip install pyinter

Or, if you absolutely must:

$ easy_install pyinter

But I’m told you really shouldn’t do that.

Documentation

Documentation is available at http://pyinter.readthedocs.org.

Contribute

Contributions or suggestions for improvements are welcome.

Release History

0.2.0 (2019-05-14)

• Fix: The interval of 2 identical numbers equals the empty set if one of the boundaries is open #20
• Improvement: Add lower and upper properties and replace method which works similarly to date.replace #19

0.1.9 (2015-08-01)

• Fix empty interval types so that empty intervals could be compared with other intervals
• Add method copy() to create new Interval instances with the same bounds and values as the Interval being copied
• Fix method overlaps on Interval and add tests for it!

0.1.8 (2015-07-14)

• Fix formatting in README.rst as pypi isn’t rendering it properly.

0.1.7 (2015-07-14)

• Fix | and & in the documentation.
• Implement subtraction of Interval’s and IntervalSet’s
• Add method empty() to detect empty Interval objects.
• Fix, each infinity should always equal itself.

0.1.6 (2014-05-11)

• Add a complement function
• Fix bug with using & and | for union() and intersection()
• Increase test coverage!

0.1.5 (2013-12-13)

• Fix the __all__ list so that you can from pyinter import *.
• Change classes to new style classes (inheriting from object)
• Added an add() function to the IntervalSet class. This will add (union) an Interval inplace. (similarly to set().add())
• The optional iterable of Interval objects passed when initialising an IntervalSet is now added Interval by Interval so that initialising with overlapping intervals works as expected.

0.1.4 (2013-11-16)

• Fix formatting in HISTORY.rst which was stopping the pypi page rendering it.

0.1.3 (2013-11-16)

• Removed *.md from the MANIFEST file as it warns when installing that no files matching *.md are found.
• Fix allowing an IntervalSet to be initialised with a generator.

0.1.2 (2013-10-12)

• Fixed the rendering of the README on pypi (hopefully!) by converting it from a .md file to a .rst file.

0.1.1 (2013-10-09)

• Adding Manifest file to fix the pypi release. This was broken because the README.md was not being included in the source distribution but setup.py had a reference to this file and therefore failed to run.

0.1.0 (2013-07-03)

• Initial release