solvers.py 文件源码

def callSolver(self, lp, callback = None):
            """Solves the problem with yaposib
            """
            if self.msg == 0:
                #close stdout to get rid of messages
                tempfile = open(mktemp(),'w')
                savestdout = os.dup(1)
                os.close(1)
                if os.dup(tempfile.fileno()) != 1:
                    raise PulpSolverError("couldn't redirect stdout - dup() error")
            self.solveTime = -clock()
            lp.solverModel.solve(self.mip)
            self.solveTime += clock()
            if self.msg == 0:
                #reopen stdout
                os.close(1)
                os.dup(savestdout)
                os.close(savestdout)