Writing a Constraint using quicksum
AnsweredHi team,
I am new to Gurobi.
I am using it for some cost optimisation.
Can someone guide me with writing this constraint?
i & t are the values inside my Variable list.
0

One way would be
import gurobipy as gp
from gurobipy import GRB
T = list(range(0,10))
I = list(range(0,10))
m = gp.Model()
N = m.addVars(I,T)
constraints = m.addConstrs((gp.quicksum(N[i,t] for t in T) == 1 for i in I), name="constraint")Here are a few good resources to get you started with nested summations:
 Python I: Introduction to Modeling with Python  Gurobi. This is your best place to start. It includes a video tutorial and examples with jupyter notebooks for you to follow. It also includes an example of using nested summations.
 netflow.py: This is a Gurobi example of how to do nested summations in two different ways: (a) using quicksum and (b) using tupledict.sum()
 quicksum() documentation
Best regards,
Jaromił0
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