Repeatedly solving a problem

#
# test-resolve.py
#
# Reads a problem solves it, then adds a constraint and re-solves it
#

from __future__ import print_function

import xpress

p = xpress.problem ()

p.read ("example.lp")
p.solve()
print ("solution of the original problem: ", p.getVariable(), "-->", p.getSolution())

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

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