子龙 王

I have looked at the relevant website and understood the application of the if constraint in gurobi, but I still don't know how to write my own questions I wonder if it is convenient to provide spe...

The complete executable code is as follows: from gurobipy import Model, GRB, quicksumimport sysimport numpy as npimport timeimport os from DataRead import getdata from itertools import chain def MP...

I also tried the following:# constraint(4)# for i in J:#     for j in OJ[i]:#         if j ! = OJ[i][0]: #             p = None#             current_machine = None#             model.update()#     ...

I don't know if adding the corresponding code in constraint 4 is the right thing to do, and I appreciate someone giving me some guidance

The last line of code is wrong. My new code should read: D[previous_machine][operations_machines],Instead of D(previous_machine,operations_machines),But it also fails in the following parts: for k ...