'tupledict' object is not callable

Answered

Furkan Sezer

• December 19, 2022 01:03

I run gurobi via pyhton. I encountered 'tupledict' object is not callable error. Details are given below.  I made the line of code which caused error bold.

 

runfile('C:/gurobi1000/win64/examples/python/production_transportation.py', wdir='C:/gurobi1000/win64/examples/python')
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Traceback (most recent call last):

  File "C:\gurobi1000\win64\examples\python\production_transportation.py", line 202, in <module>
    m.addConstrs(

  File "src\gurobipy\model.pxi", line 3747, in gurobipy.Model.addConstrs

  File "C:\gurobi1000\win64\examples\python\production_transportation.py", line 203, in <genexpr>
    (production(i,j,k)==UPH(i,j)*base_prod(i,k) for i in plants for j in prod_line for k in months),"production_assignment_to_lines" )

TypeError: 'tupledict' object is not callable

Related to

• Error
• Python

0

• 

  Jaromił Najman

  Gurobi Staff

  • December 19, 2022 08:20

  Hi Furkan,

  Please note that this is not a minimal reproducible example and the help that can be provided is only limited.

  It is not clear which objects are your variables. I will assume that all 3 objects \(\texttt{production, UPH, base_prod}\) are optimization variables. As described in the documentation of tupledict

  To access the members of a tupledict, you can use standard dict indexing. For example, d[1,2] returns the value associated with tuple (1,2).

  Thus, your constraint should read

  m.addConstrs(production[i,j,k]==UPH[i,j]*base_prod[i,k] 
               for i in plants for j in prod_line for k in months),
               name="production_assignment_to_lines")

  Best regards, 
  Jaromił

  0
• 

  Furkan Sezer

  • December 19, 2022 18:28

  

  

  

  Thank you Jaromil. I will create a minimal reproducible example for future questions. 

  Best regards,

  Furkan

  0

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