Pyomo/pyomo 6.8.1

Pyomo 6.8.1

on GitHub

"Annie"

Highlights of the 6.8 release series

• Complete Documentation Reorganization
• Added support for Python 3.13
• Refactor default Gurobi interface to support version 12
• Support for NumPy2
• Refactor of Design of Experiments (contrib.doe)
• New packages:
  • alternative_solutions: alternative (near) optimal solutions
• New solver interfaces:
  • SAS: Statistical Analysis System
  • v2: Ongoing solver interface refactor
• ...and of course numerous minor bug fixes and performance enhancements

Changes in this release

SIGNIFICANT CHANGE NOTICE

• This will be the last release to support Python 3.8
• This is the first release to be tested against Python 3.13
• Complete reorganization of our online documentation (#3382, #3378)

CHANGELOG

• General
  • Add a 'Do not delete' Disclaimer to Issues/PR Templates (#3361)
  • Add URL Status Badge to README (#3373)
  • Resolve change in InvalidNumber handling in writers (#3390)
  • Update common.timing to make tests more deterministic (#3397)
  • Defer processing ConfigValue/ConfigList default until first use (#3394)
  • Improved support for moved/renamed/deprecated modules (#3385)
  • Fix ConfigValue initialization in multithreaded environments (#3405)
  • ConfigDict: prevent recursion on partially-constructed objects (#3409)
  • Fix bug in AutoSlots deepcopy (#3412, #3413)
  • Update mpi4py_available to work around conda-forge/openmpi (#3416)
• Core
  • Resolve bugs in create_node_with_local_data (#3376)
  • Resolve issue in filter/validate deprecation path (#3368)
  • Support Param.pprint() for non-finite Params (#3387)
  • Add (parameterized) linear programming dual transformation (#3402)
• Documentation
  • Autogenerate API documentation (#3378)
  • Add Alternative Solutions documentation (#3370)
  • Reorganize online documentation (#3382)
  • Fix broken doc URLs (#3398)
  • Improved autoenum documentation (#3389)
  • Reduce the number of formats built on readthedocs to avoid timeout (#3404)
• Solver Interfaces
  • Remove deprecated gurobipy addConstr call (#3350)
  • Update Xpress interfaces to support 9.5 (#3392)
  • Add support for templatized models in gurobi_direct_v2 (#3362)
  • Update test for GAMS mapping 'infeasible or unbounded' to infeasible (#3396)
  • XpressDirect.available(): check there is a valid license (#3400)
  • Move away from dependence on gurobi.sh (#3384)
  • Fix error when xpress is imported before xpress_direct (#3410)
• Testing
  • Move URL Checker to Weekly Job (#3360)
  • Correct newly discovered typos (#3365, #3399)
  • Remove Octeract from NEOS solvers list (and other testing fixes) (#3374)
  • Guard tests against broken Gurobi licenses (#3383)
  • Remove pin to Gurobi 10.0.3 (#3393)
  • Add Python 3.13 to Testing Infrastructure (#3401, #3419)
  • Resolve timeout() failures on Windows/py3.13 (#3415)
• GDP
  • Fix performance degradation in hull transformation (#3366)
• Contributed Packages
  • DoE: Fix bug from using hardcoded value (#3358)
  • iis: Catch catastrophic solver failure when building MIS (#3403)
  • PyNumero: Reverse BlockVector/MPIBlockVector base class order (#3380)
  • PyNumero: Resolve incompatibilities with NumPy2 (#3408)
  • PyROS: Overhaul preprocessor subroutine and subproblem objects (#3341)