GurobiError: Unsupported type (<class 'gurobipy.TempConstr'>) for LinExpr addition argument

Answered

Sergio Vanegas

June 20, 2020 06:15

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Hi, I'm trying to add the following constraint but i get this error:

GurobiError: Unsupported type (<class 'gurobipy.TempConstr'>) for LinExpr addition argument

The summarized process is as follows:

from itertools import product

pacientes=info_pacientes_modelo['Paciente'].values.tolist()

id_salas=info_salas['ID sala'].values.tolist()

cirujanos=info_cirujanos['ID cirujano'].values.tolist()

horas=[m for m in range(24)]

num_pacientes=len(pacientes)

num_salas=len(id_salas)

num_cirujanos=len(cirujanos)

num_horas=len(horas)

pacientes_salas_hora=list(product(range(num_pacientes),range(num_salas),range(num_horas)))

m.addConstrs((gp.quicksum(z[i,j,k,l]<=16 for i,j,l in pacientes_salas_hora) for k in cirujanos),name="agotamiento_fisico")

The constraint I model is teh following:

I hope you can help me. Thanks for your time.

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  June 23, 2025 03:11 Edited

  This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum. Or why not try our AI Gurobot?.
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  Sergio Vanegas

  June 20, 2020 19:05

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  I solved it, thanks :)

  m.addConstrs((gp.quicksum(z[i,j,k,l] for i,j,l in pacientes_salas_hora)<=16 for k in cirujanos),name="fisico_total")

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