Gurobi Python: how to write nested sum in a constraint

让人想犯罪 __ 提交于 2019-11-30 21:01:31

Use two for statements inside the quicksum() function and two for statements in the generator expression:

mycts = m.addConstrs((quicksum(x[i,f,p]*y[i,f,p,t]
                               for i in I for p in P[i,f]) <= z[f,t]
                               for f in F for t in T), "myconstraint")

where m is your Model object.

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