"boolean.py" is a small library implementing a boolean algebra. It defines two base elements, TRUE and FALSE, and a Symbol class that can take on one of these two values. Calculations are done in terms of AND, OR and NOT - other compositions like XOR and NAND are not implemented but can be emulated with AND or and NOT. Expressions are constructed from parsed strings or in Python.
It runs on Python 2.7 and Python 3.
>>> import boolean >>> algebra = boolean.BooleanAlgebra() >>> expression1 = algebra.parse(u'apple and (oranges or banana) and not banana', simplify=False) >>> expression1 AND(Symbol('apple'), OR(Symbol('oranges'), Symbol('banana')), NOT(Symbol('banana'))) >>> expression2 = algebra.parse(u'(oranges | banana) and not banana & apple', simplify=True) >>> expression2 AND(Symbol('apple'), NOT(Symbol('banana')), Symbol('oranges')) >>> expression1 == expression2 False >>> expression1.simplify() == expression2 True
Installation via pip
To install boolean.py, you need to have the following pieces of software on your computer:
- Python 3.6+
You then only need to run the following command:
pip install boolean.py
Installation via package managers
There are packages available for easy install on some operating systems. You are welcome to help us package this tool for more distributions!
- boolean.py has been packaged as Arch Linux, Fedora, openSus, nixpkgs, Guix, DragonFly and FreeBSD packages .
boolean.py with your current Python environment:
python setup.py test
Test with all of the supported Python environments using
pip install -r test-requirements.txt tox
InterpreterNotFound, limit it to python
interpreters that are actually installed on your machine:
tox -e py27,py36
Copyright (c) 2009-2020 Sebastian Kraemer, email@example.com and others SPDX-License-Identifier: BSD-2-Clause