GAMSPy 0.11.4

• General

  • Expose GTP special values via gp.SpecialValues

  • Fix NEOS bug when the previous workfile comes from another backend.

  • Optimize read function of Container by assigning the symbols’ attributes directly while casting.

  • Remove autogenerated variable and equation from Container after each solve.

  • Recover dirty and modified states if the write is invoked by the user.

  • Do not expose cast_to_gamspy to user.

  • Abstract backends to allow easier extension.

  • Add compress, mode, eps_to_zero arguments to write

  • Add load_records, mode, and encoding arguments to read

• Documentation

  • Fix Variable attribute assignments in user guide.

  • Add more examples in docstrings.

  • Add docs for collecting the results of non-blocking NEOS Server solves.

• Testing

  • Test the special value usage in assignments for Parameter, ImplicitParameter and Operation (Sum, Smax, Smin, Product).

  • Add hansmpsge model to the model library.

  • Add tests for the new arguments of write

  • Add tests for the new arguments of read