fixes #479

HISTORY

@@ -2,6 +2,11 @@
 #       Copyright S.A.Mitchell (s.mitchell@auckland.ac.nz), 2007-
 #       Copyright F.Peschiera (pchtsp@gmail.com), 2019-
 # See the LICENSE file for copyright information.
+2.6.0 2021-
+    dropped packaged choco
+    fixed bugs
+    added HiGHS solver
+    added pysmps dependency for mps parsing
 2.5.0 2021-08-11
     measuring wall time and cpu time
     unittests of timeLimit

pulp/apis/coin_api.py

@@ -192,6 +192,8 @@ def solve_CBC(self, lp, use_mps=True):
         args.extend(cmds[1:].split())
         cbc = subprocess.Popen(args, stdout=pipe, stderr=pipe, stdin=devnull)
         if cbc.wait() != 0:
+            if pipe:
+                pipe.close()
             raise PulpSolverError(
                 "Pulp: Error while trying to execute, use msg=True for more details"
                 + self.path

pulp/pulp.py

@@ -1998,7 +1998,7 @@ def assignStatus(self, status, sol_status=None):
 class FixedElasticSubProblem(LpProblem):
     """
     Contains the subproblem generated by converting a fixed constraint
-    :math:`\sum_{i}a_i x_i = b` into an elastic constraint.
+    :math:`\\sum_{i}a_i x_i = b` into an elastic constraint.
 
     :param constraint: The LpConstraint that the elastic constraint is based on
     :param penalty: penalty applied for violation (+ve or -ve) of the constraints