FICO Xpress Optimization Examples Repository: Repeatedly solving a problem

FICO Xpress Optimization Examples Repository

Repeatedly solving a problem

Description

Reads a problem, solves it, then adds a constraint and re-solves it

Further explanation of this example: 'Xpress Python Reference Manual'

Resolve_python.zip

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Source Files

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resolve.py

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resolve.py

# Reads a problem, solves it, then adds a constraint and re-solves it.
#
# (C) 1983-2025 Fair Isaac Corporation

import xpress

p = xpress.problem()

p.readProb("Data/example.lp")
p.optimize()
print("solution of the original problem: ", p.getVariable(), "-->",
      p.getSolution())

x = p.getVariable()
p.addConstraint(xpress.Sum(x) <= 1.1)
p.optimize()
print("New solution: ", p.getSolution())