PyPI · #1647 most downloaded on PyPI

pulp

4.0.05.5M downloads/mocoin-or/pulp ↗New releases in your daily digest, changelog included.

PuLP is an LP modeler written in python. PuLP can generate MPS or LP files and call GLPK, COIN CLP/CBC, CPLEX, and GUROBI to solve linear problems.

Last release 9 days ago
25 Sep 2026
Release timing varies
gaps range from 8 days to 7 months
Rarely documented
notes for 5 of 54 stable releases
Nothing withdrawn
no release was ever pulled
17 years old
65 releases · first in 2009

Release timeline

65 releases since 2009

20092011201320152017

Releases

4.0.025 Sept 2026
Bump astral-sh/setup-uv from 6 to 7 by @dependabot [bot] in #875
What's Changed

Bump astral-sh/setup-uv from 6 to 7 by @dependabot[bot] in #875

fixes #878 by @pchtsp in #880

Minor documentation improvements by @oscargus in #885

Rust core by @pchtsp in #900

Handle cuOpt UnboundedOrInfeasible status (11) in CUOPT adapter and tests by @ramakrishnap-nv in #901

Replaced convertions from const cat to rustcore category with internal function. by @SteefCoder in #907

get available mip solution if status is not optimal by @riis-hhd in #821

Return undefined status for infeasible or unbound by @SteefCoder in #910

Bump actions/download-artifact from 4 to 8 by @dependabot[bot] in #912

Bump actions/upload-artifact from 6 to 7 by @dependabot[bot] in #911

Bump the uv group across 1 directory with 2 updates by @dependabot[bot] in #909

Add kSolutionLimit and kMemoryLimit status to HiGHS API. Fixes #895 by @SteefCoder in #908

Bump idna from 3.11 to 3.15 in the uv group across 1 directory by @dependabot[bot] in #913

Update Xpress solver integration for API v9.8 with backward compatibility by @brunoficoxpress in #906

CPSAT solver by @pchtsp in #914

Refactor tests by @pchtsp in #916

HiGHS_PY: Support logPath for setting log file by @WPettersson in #918

Add an option to register external solvers by @greg19 in #923

Use unittest in lpdot tests by @greg19 in #924

Use modern types by @greg19 in #926

Fix tests by @greg19 in #928

Improve variable category typing by @greg19 in #927

Sync uv.lock with pyproject.toml by @greg19 in #929

Move rust by @pchtsp in #930

Bump pyo3 from 0.28.2 to 0.29.0 in /pulp/rust in the cargo group across 1 directory by @dependabot[bot] in #931

fixes all ty warnings and errors by @pchtsp in #934

feat: add randomSeed argument to COIN_CMD for reproducible CBC solves (#613) by @haiiibin in #936

Bump actions/setup-python from 6 to 7 by @dependabot[bot] in #937

fixes #943 by @pchtsp in #944

solvers now use try_except more cleanly by @pchtsp in #945

LpSolveStats by @pchtsp in #942

New Contributors

@oscargus made their first contribution in #885

@ramakrishnap-nv made their first contribution in #901

@SteefCoder made their first contribution in #907

@riis-hhd made their first contribution in #821

@brunoficoxpress made their first contribution in #906

@greg19 made their first contribution in #923

@haiiibin made their first contribution in #936

Full Changelog: 3.3.0...4.0.0

One column per quarter.

4.0.0a1325 Sept 2026pre-release

feat: add randomSeed argument to COIN_CMD for reproducible CBC solves ( #613 ) by @haiiibin in #936

What's Changed

feat: add randomSeed argument to COIN_CMD for reproducible CBC solves (#613) by @haiiibin in #936
Bump actions/setup-python from 6 to 7 by @dependabot[bot] in #937
fixes #943 by @pchtsp in #944
solvers now use try_except more cleanly by @pchtsp in #945
LpSolveStats by @pchtsp in #942

New Contributors

@haiiibin made their first contribution in #936

Full Changelog: 4.0.0a12...4.0.0a13

Open source →

4.0.0a1219 Jun 2026pre-release

Nothing published for this version

4.0.0a1119 Jun 2026pre-release

Nothing published for this version

4.0.0a1017 Jun 2026pre-release

Nothing published for this version

4.0.0a927 May 2026pre-release

CPSAT solver by @pchtsp in #914

What's Changed

CPSAT solver by @pchtsp in #914
Refactor tests by @pchtsp in #916

Full Changelog: 4.0.0a8...4.0.0a9

Open source →

4.0.0a822 May 2026pre-release

Full Changelog : 4.0.0a7...4.0.0a8

Full Changelog: 4.0.0a7...4.0.0a8

Open source →

4.0.0a629 Apr 2026pre-release

Arc + Mutex instead of Rc + Weak. So it doesn't crash on python debug…

Open source →

4.0.0a516 Apr 2026pre-release

Nothing published for this version

4.0.0a414 Apr 2026pre-release

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4.0.0a311 Apr 2026pre-release

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4.0.0a26 Apr 2026pre-release

Nothing published for this version

3.3.225 May 2026

Full Changelog : 3.3.1...3.3.2

Full Changelog: 3.3.1...3.3.2

Open source →

3.3.15 May 2026

Nothing published for this version

3.3.018 Sept 2025Deprecated

Fix PEP639 license related setuptools deprecation warnings. by @tttc3 in https://github.com/coin-or/pulp/pull/872

What's Changed

Refactored solverParams and solverModel initialization in CPLEX_PY by @G-Carneiro in https://github.com/coin-or/pulp/pull/858
Removes test import from pulp.init by @simon-b in https://github.com/coin-or/pulp/pull/854
fixes #448 by @pchtsp in https://github.com/coin-or/pulp/pull/859
Remove test_set_all_params to fix #861 by @G-Carneiro in https://github.com/coin-or/pulp/pull/863
how to install solvers + dependency groups by @pchtsp in https://github.com/coin-or/pulp/pull/860
Fix PEP639 license related setuptools deprecation warnings. by @tttc3 in https://github.com/coin-or/pulp/pull/872
Bump supplypike/setup-bin from 4 to 5 by @dependabot[bot] in https://github.com/coin-or/pulp/pull/868
Bump actions/checkout from 4 to 5 by @dependabot[bot] in https://github.com/coin-or/pulp/pull/865
Use dynamic versioning and bump version in constants.py by @tttc3 in https://github.com/coin-or/pulp/pull/871
Update log file setting and objective constant by @Iroy30 in https://github.com/coin-or/pulp/pull/867
Bump actions/setup-python from 5 to 6 by @dependabot[bot] in https://github.com/coin-or/pulp/pull/873
Fix Xpress solver deprecation warnings for API changes in Xpress 9.5 by @pepeleduin in https://github.com/coin-or/pulp/pull/833

New Contributors

@simon-b made their first contribution in https://github.com/coin-or/pulp/pull/854
@tttc3 made their first contribution in https://github.com/coin-or/pulp/pull/872

Full Changelog: https://github.com/coin-or/pulp/compare/3.2.2...3.3.0

Open source →

3.2.229 Jul 2025

Test examples only if they are found; fixes #844 by @musicinmybrain in https://github.com/coin-or/pulp/pull/845

What's Changed

Test examples only if they are found; fixes #844 by @musicinmybrain in https://github.com/coin-or/pulp/pull/845
new version of mypy changes its mind by @pchtsp in https://github.com/coin-or/pulp/pull/846
Update contribution docs by @jebob in https://github.com/coin-or/pulp/pull/840
remove cylp from windows by @pchtsp in https://github.com/coin-or/pulp/pull/851
fixes #855 by @pchtsp in https://github.com/coin-or/pulp/pull/856
Stop running gurobi test decorators on import by @torressa in https://github.com/coin-or/pulp/pull/853
Add callback and parameter configuration support to CPLEX_PY solver by @G-Carneiro in https://github.com/coin-or/pulp/pull/850

New Contributors

@musicinmybrain made their first contribution in https://github.com/coin-or/pulp/pull/845
@jebob made their first contribution in https://github.com/coin-or/pulp/pull/840

Full Changelog: https://github.com/coin-or/pulp/compare/3.2.0...3.2.2

Open source →

3.2.129 May 2025

Nothing published for this version

3.2.029 May 2025

Nothing published for this version

3.1.124 Mar 2025

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3.0.220 Feb 2025

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3.0.120 Feb 2025

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3.0.019 Feb 2025

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2.9.012 Jul 2024

Nothing published for this version

2.8.012 Jan 2024Deprecated

…actions cbc arm binary fixes to SCIPS took out deprecations in arguments

mip start in HiGHS_CMD and SCIP_PY GUROBI solver with environment handling added COPT solver added gurobi, highs, xpress, copt to github actions cbc arm binary fixes to SCIPS took out deprecations in arguments

Open source →

2.7.03 Nov 2022

Nothing published for this version

2.6.04 Dec 2021

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2.5.128 Sept 2021

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2.5.011 Aug 2021

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2.416 Dec 2020

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2.3.122 Oct 2020

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2.34 Aug 2020

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2.24 Jul 2020

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2.15 Apr 2020

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2.023 Nov 2019

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1.6.1014 May 2019

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1.6.924 Oct 2018

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1.6.816 Jul 2017

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1.6.710 Jul 2017

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1.6.69 Jul 2017

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1.6.523 Feb 2017

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1.6.423 Feb 2017

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1.6.3

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1.6.26 Feb 2017

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1.6.125 Dec 2015

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1.6.09 Jun 2015

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1.5.918 Apr 2015

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1.5.84 Apr 2015

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1.5.731 Mar 2015

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1.5.624 Feb 2014

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1.5.421 Mar 2013

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1.5.37 Jun 2012

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1.5.217 May 2012

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1.5.126 Feb 2012

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1.5.017 Jan 2012

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1.4.91 Oct 2011

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1.4.815 Apr 2011

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1.4.728 Jan 2010

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1.4.625 Jan 2010

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1.4.525 Jan 2010

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1.4.424 Jan 2010

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