Initialize Mosel sets from Python

(!******************************************************
   Mosel Python Example Problems
   =============================

   file init_set_from_py.mos
   `````````````````````````
   Initialize Mosel sets from iterable Python objects.

  (c) 2018 Fair Isaac Corporation
      author: J.Müller
*******************************************************!)
model 'init_set_from_py'
    options noimplicit

    uses 'python3'

    ! Example how to add items from Python iterator to Mosel sets.
    procedure example_mosel_set_from_python
        declarations
            setOfInt: set of integer
            setOfStr: set of string
            setOfSetOfStr: set of set of string
            setFromGenerator, setFromGeneratorExpr, setFromIterableObj: set of integer
        end-declarations

        writeln("Import class definitions and function definitions from Python script...\n")
        pyrun('init_set_from_py.py')

        writeln("Execute imported function...\n")
        pyexec('mosel_set_add_from_py_iterator()')

        writeln("\nInit from Python...\n")

        ! The following initializations are supposed to succeed.
        initialisations from PY_IO_GLOBAL_VAR
            setOfInt
            setOfStr
            setOfSetOfStr
            setFromGenerator
            setFromGeneratorExpr
            setFromIterableObj
        end-initialisations

        writeln("\nValues in Mosel:")
        writeln("setOfInt             = ", setOfInt)
        writeln("setOfStr             = ", setOfStr)
        writeln("setOfSetOfStr        = ", setOfSetOfStr)
        writeln("setFromGenerator     = ", setFromGenerator)
        writeln("setFromGeneratorExpr = ", setFromGeneratorExpr)
        writeln("setFromIterableObj   = ", setFromIterableObj)
    end-procedure

    example_mosel_set_from_python
    writeln("Finished without errors.")
end-model