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Pyomo 6.4.2
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@jsiirola jsiirola released this 17 Aug 16:05
· 8933 commits to main since this release
6.4.2
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Highlights of the 6.0 release series

  • Improved stability and robustness of core Pyomo code and solver interfaces
  • Integration of Boolean variables into GDP
  • Integration of NumPy support into the Pyomo expression system
  • Added support for Python 3.10
  • Removed support for Python 3.6
  • New packages:
    • APPSI (Auto-Persistent Pyomo Solver Interfaces)
    • External grey box models
    • PyROS (Pyomo Robust Optimization Solver)
    • Structural model analysis
    • Rewrite of the TrustRegion Solver

Changes in this release

  • General
    • Resolve dill incompatibility with attempt_import (#2419)
    • Speed up book tests and improve import/logging infrastructure (#2449)
    • Make typing overloads available at runtime (#2471)
    • Update list of known TPLs to reflect Python 3.10 (#2478)
    • Add NL writer version 2 but don't activate by default (#2473)
    • Add deprecation.relocated_module utility (#2492)
  • Core
    • Support cython functions through Initializer (#2421)
    • Ensure UnindexedComponent_set is correctly pickled/restored (#2416)
    • Update as_numeric() to raise an exception on non-is_numeric_type() Pyomo
      objects (#2444)
    • replace_expressions: support replacing variables with constants (#2410)
    • Update component_data_objects and component_data_iterindex to not
      return duplicate data (#2456)
    • Fix exception handling logic bug in quicksum (#2458)
    • Reduce recursion in model clone/deepcopy (#2487)
    • Resolve exception cloning empty LinearExpression objects (#2489)
    • Resolve errors from inplace operators on Expression objects (#2493)
  • Documentation
    • Fix typos and incorrect link (#2420, #2482)
    • Fix Sphinx warnings in documentation builds (#2434)
  • Solver Interfaces
    • Add support for SCIP 8.0 (#2409)
    • Add explicit space to GAMS put statements to support GAMS 39+ (#2450)
    • Catch exceptions in BARON interface when parsing objective bounds (#2467)
  • Testing
    • Skip SCIP 8.0 tests on PyPy (#2424)
    • Force conda to use conda-forge channel in GHA (#2430)
    • Fix GHA win/3.10 Python version inconsistency (#2433)
    • Enable Pyomo.DAE Simulator tests on PyPy (#2443)
    • Abort the Jenkins build if virtualenv creation fails (#2451)
    • Remove scipy from GHA PyPy builds (#2474)
    • Move performance testing driver scripts to scripts/performance (#2476)
    • Improve common.timing test robustness (#2490)
  • Contributed Packages
    • APPSI: Improve error message in nl writer when all variables fixed (#2407)
    • APPSI: Fix bug in Gurobi interface when modifying the objective (#2454)
    • APPSI: Solve blocks that use variables that are not on the block (#2453)
    • APPSI: Method to release Gurobi license from persistent interface (#2480)
    • community_detection: Trap exceptions from networkx (#2415)
    • FBBT: Add tolerances to tests (#2445)
    • GDPopt: Refactor to improve extensibility and maintainability (#2406)
    • incidence_analysis: Add method for weakly connected components (#2418)
    • MindtPy: Fix bug in copying variable values between models (#2432)
    • MindtPy: Add support for appsi_cplex and appsi_gurobi (#2373)
    • Parmest: Add utils submodule and support to convert Params to Vars (#2352)
    • Parmest: Fix use of relocated_module_attribute (#2472)
    • PyROS: Fixes to ellipsoidal sets (#2425)
    • PyROS: Account for variable domains (#2426)
    • PyROS: Fix objective validation (#2371)
    • PyROS: Avoid master feasibility problem unit consistency checks (#2459)
    • PyROS: Fix discrete uncertainty set separation (#2469)
    • PyROS: Update exception handling parsing BARON lower/upper bounds (#2486)
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