Problem with dictionaries and arrays
ユーザーの入力を待っています。
I kind of have a unique Opimization Problem therefore cant look at examples. What I want to do is to minimize cost of production with machines and tasks to be assigned. Also there are different types of machines with different costs but firstly I want to solve another problem.
A minimum example is like followes:
stations = [1,2]
costs = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20]
arcs = [(i,j) for i in tasks for j in stations]
c = {(i,j): costs_BTC1[j-1] for i,j in arcs}
The tasks variable I get from a Excel Sheet and it works fine. The output for tasks is like that:
['w01','w02','w03','w04','w05','w06','w07','w08','w09','w10','w11', 'w12','w13','w14','w15','w16','w17','w18','w19','w20']
When I print c i get:
{('w01', 1): 2,
('w01', 2): 3,
('w02', 1): 2,
('w02', 2): 3,
('w03', 1): 2,
('w03', 2): 3,
.....}
and so on 40 times this kind of combination.
What I want is that the costs are dependent on tasks but not on stations like here. So for this example something like:
('w01', 1): 1
('w02', 1): 2
('w03', 1): 3
... and so on and the same values for station 2 because cost are not dependent on station.
How can I do this? If I try to make cost to a dictionary it says that integer or slices are expected but even like that cant reach what I want
Aprreciate your help!
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Gurobi Staff
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Note that this is not really a Gurobi issue but rather a general Python question.
Could you please provide a minimal reproducible example? For this, you would to at least provide the costs_BTC1 list and state what exactly you want to get.
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