Issues

• 2 tests fail

  coin-or/pulp#959 · Filter by author yurivict opened on Oct 13, 2026

• LpAffineExpression.get() ignores the default for variables not in the expression

  coin-or/pulp#954 · Filter by author raashish1601 opened on Oct 7, 2026

• Documentation for LpProblem.add_variable_dicts

  coin-or/pulp#952 · Filter by author WPettersson opened on Oct 6, 2026

• Building from sdist tries to include the whole Rust target directory, leading to broken wheel

  coin-or/pulp#949 · Filter by author mgorny opened on Oct 1, 2026
  4

• LpConstraint does not print well in a pandas.DataFrame

  help wanted
  coin-or/pulp#946 · Filter by author brabenasolo-gh opened on Sep 26, 2026
  5

• Cannot modify constraints after adding to problem

  coin-or/pulp#933 · Filter by author greg19 opened on Jun 19, 2026

• Rust Category.Binary is a dead code

  coin-or/pulp#932 · Filter by author greg19 opened on Jun 15, 2026
  2

• logPath Parameter Ignored in pulp.FSCIP_CMD Solver

  bugSCIP
  coin-or/pulp#892 · Filter by author pierrotseban opened on Dec 20, 2025
  3

• Unsupported bound type "MI"

  lp/mps
  coin-or/pulp#886 · Filter by author flomnes opened on Nov 17, 2025
  1

• Adding Artelys Knitro solver API in PuLP

  enhancement
  coin-or/pulp#883 · Filter by author Albe21072000 opened on Oct 28, 2025
  4

  

• Setting primal_feasibility_tolerance for pulp.HiGHS solving

  HiGHs
  coin-or/pulp#882 · Filter by author HarrisonWilde opened on Oct 22, 2025
  3

• Test pulp.tests.test_pulp.HiGHS_CMDTest.test_time_limit_no_solution fails on non-x86 architectures

  HiGHs
  coin-or/pulp#832 · Filter by author musicinmybrain opened on Apr 20, 2025
  1

• TypeError when LpAffineExpressions are Specified Using Decimals

  coin-or/pulp#815 · Filter by author mark92223 opened on Mar 21, 2025
  8

• Solver fails if TMPDIR includes a space

  coin-or/pulp#811 · Filter by author saizai opened on Mar 15, 2025
  2

• Unsupported bound type MI in pulp.LpProblem.fromMPS

  lp/mps
  coin-or/pulp#791 · Filter by author dwr-zroy opened on Feb 12, 2025
  2

• PuLP does not correctly read a class of MPS files in MILIB2017

  lp/mps
  coin-or/pulp#790 · Filter by author jacurick19 opened on Jan 15, 2025
  4

• [BUG] Suspecting wrong return of LpStatusOptimal when using CBC

  CBC
  coin-or/pulp#711 · Filter by author Vincent-Liagre-QB opened on Dec 14, 2023
  4

• timeLimit Parameter Ignored in pulp.FSCIP_CMD Solver

  SCIP
  coin-or/pulp#707 · Filter by author kami9811 opened on Dec 6, 2023
  3

• CBC Solver Hangs on Certain MPS Problems -- PuLP Should Handle More Gracefully

  CBC
  coin-or/pulp#699 · Filter by author TCRichards opened on Nov 3, 2023

• CPLEX LP file processing error - missing right-hand side

  cplex
  coin-or/pulp#695 · Filter by author chanzer0 opened on Oct 4, 2023
  1

• why clp can return solution even the problem is infeasible

  CBC
  coin-or/pulp#669 · Filter by author rlacjfjin opened on Jul 17, 2023

• HiGHS_CMD - .sol file only has values of the decision variables ; not their names

  HiGHs
  coin-or/pulp#667 · Filter by author s-u-m-a-n-t-h opened on Jul 5, 2023

• Can't use options file with HiGHS_CMD solver

  HiGHs
  coin-or/pulp#648 · Filter by author mamiavi opened on Apr 24, 2023
  1

• options setting in different solver apis can be unified

  enhancement
  coin-or/pulp#638 · Filter by author ben-xj opened on Mar 21, 2023

• Problem read from MPS is solved incorrectly

  lp/mps
  coin-or/pulp#511 · Filter by author mkturtledude opened on Dec 6, 2021
  1