FICO Xpress Optimization Examples Repository: Basic embedding tasks

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Basic embedding tasks

Description

ugcomp.py: Compiling a model into a BIM file (requires burglar2.mos, burglar.dat)
ugarray.py: Accessing modeling objects: sparse arrays (requires transportp.mos, transprt.dat)
ugcb.py: Retrieve model output via a callback (requires burglar2.mos, burglar.dat)
ugparam.py: Passing parameters to a Mosel model (requires prime.mos)
ugsol.py: Accessing modeling objects and solution information (requires burglar3p.mos, burglar.dat)

Difficulty rating: 2 (easy-medium)

ugpython.zip

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Source Files

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ugcomp.py	[download]
ugarray.py	[download]
ugcb.py	[download]
ugsol.py	[download]
ugparam.py	[download]
burglar2.mos	[download]
transportp.mos	[download]
prime.mos	[download]
burglar3p.mos	[download]

Data Files

burglar.dat	[download]
transprt.dat	[download]

ugcb.py

#######################################################
#  Mosel User Guide Example Problems
#  =================================
#
#  file ugcb.py
#  ````````````
#  Redirecting the Mosel output in Python.
#
#  (c) 2026 Fair Isaac Corporation
#      author: B. Vieira, 2026
########################################################

import moselpy as mp
from io import StringIO

mp.compile_model("burglar2.mos", "burglar2.bim")
model = mp.load_model("burglar2.bim")

# Capture output to a Python buffer
buf = StringIO()
model.symbols["out"] = buf
model.set_default_stream(mp.StreamType.OUTPUT, "moselpy:out")
model.run()
del model.symbols["out"]

captured = buf.getvalue()
for line in captured.splitlines():
    print(f"Mosel: {line}")