From 9e4004ae8a15d9e3922139ee1992131778032ded Mon Sep 17 00:00:00 2001
From: Alinson S Xavier <axavier@anl.gov>
Date: Sat, 22 Feb 2020 22:45:30 -0600
Subject: [PATCH] Silence Gurobi

---
 miplearn/solvers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/miplearn/solvers.py b/miplearn/solvers.py
index 1606d30..f1d7b82 100644
--- a/miplearn/solvers.py
+++ b/miplearn/solvers.py
@@ -51,6 +51,7 @@ class InternalSolver():
 class GurobiSolver(InternalSolver):
     def __init__(self):
         self.solver = pe.SolverFactory('gurobi_persistent')
+        self.solver.options["OutputFlag"] = 0
         self.solver.options["Seed"] = randint(low=0, high=1000).rvs()
     
     def set_threads(self, threads):
@@ -185,7 +186,6 @@ class LearningSolver:
         # Solve LP relaxation
         results = self.internal_solver.solve_lp(model, tee=tee)
         instance.lp_solution = self.internal_solver.get_solution(model)
-        print(results)
         instance.lp_value = results["Optimal value"]
         
         # Invoke before_solve callbacks