boolean.py
Define boolean algebras, create and parse boolean expressions and create custom boolean DSL.
Decision gist · record as of 2026-08-14
Yes, if you need boolean expression parsing and simplification. The library is stable, dependency-free, and well-established (since 2016). The aging maintenance status (498 days since last release) is not a blocker for a mature, focused tool with no known vulnerabilities, but verify that its feature set matches your needs before committing to it for new projects.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low friction install with no runtime dependencies.
- Marked as aging (last release 498 days ago), though the repository remains active and the package is classified as Production/Stable.
License · maintenance · safety
BSD-2-Clause (permissive) — BSD-2-Clause is a permissive license; you can use this package freely in commercial and private projects with minimal restrictions.
last release 2025-04-03 (498 days) · last repo commit 2025-04-03 · 85 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 39,424,988 downloads/mo, #697 on PyPI
Alternatives
Verify before relying
pip install boolean.py
from boolean import Expression, AND, OR, NOT
expr = Expression("a AND (b OR NOT c)")
simplified = expr.simplify()
print(simplified)- Whether the package supports Python 3.x versions beyond what the classifiers indicate (requires_python is unspecified)
- Whether custom tokenizer and DSL features are production-ready or documented with examples
What it is and what it does
boolean.py is a library for working with boolean expressions and algebra. It lets you parse boolean logic from strings, simplify expressions to canonical forms, and compare them for equivalence. The core operations are AND, OR, and NOT on named variables, and the library handles the algebraic rules that govern how these combine and reduce.
The package is designed for developers who need to work with logical constraints, rule engines, or domain-specific languages built on boolean logic. It has no runtime dependencies, making it lightweight to integrate. You can extend it with custom tokenizers and algebras to handle domain-specific syntax, though the main use case is straightforward expression parsing and manipulation.
Use it for
- Parse and simplify boolean constraints in rule engines or configuration systems
- Compare logical expressions for equivalence in automated testing or verification
- Build a domain-specific language for boolean logic with custom operators and syntax
- Reduce complex boolean formulas to simpler equivalent forms for analysis
- Validate and normalize user-supplied boolean expressions in applications
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need boolean expression parsing and simplification.
The library is stable, dependency-free, and well-established (since 2016). The aging maintenance status (498 days since last release) is not a blocker for a mature, focused tool with no known vulnerabilities, but verify that its feature set matches your needs before committing to it for new projects.
Install
boolean-py on PyPI
Before you install
Low friction install with no runtime dependencies. Marked as aging (last release 498 days ago), though the repository remains active and the package is classified as Production/Stable.
License in practice
BSD-2-Clause is a permissive license; you can use this package freely in commercial and private projects with minimal restrictions.
Quickstart
pip install boolean.py
from boolean import Expression, AND, OR, NOT
expr = Expression("a AND (b OR NOT c)")
simplified = expr.simplify()
print(simplified)Verify before relying
- Whether the package supports Python 3.x versions beyond what the classifiers indicate (requires_python is unspecified)
- Whether custom tokenizer and DSL features are production-ready or documented with examples
Package facts
| License | BSD-2-Clause permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Aging 498 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 39,424,988 / month, #697 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Topic :: Scientific/Engineering :: MathematicsTopic :: Software Development :: CompilersTopic :: Software Development :: LibrariesTopic :: Utilities |
Evidence: boolean_py-5.0-py3-none-any.whl
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See also license-expression · str2bool · tag-expressions · py-expression-eval · esp-bool-parser · pyspdx · simpleeval · cucumber-tag-expressions · rest_condition · cel-expr-python