TypeError: 'gurobipy.LinExpr' object is not iterable

Answered

Geoffrey James Kameni Tchokode

• March 17, 2022 18:10

Hi,

I'm trying to code the order batching model  but i get this error. 

Can someone tell me, what is wrong?

Thks

 

 

0

• 

  Jaromił Najman

  Gurobi Staff

  • March 17, 2022 19:14

  You are using two quicksums in line 3. This line should either read

  2*quicksum(quicksum(uvar[jbatch,kaisle] for jbatch in Batch) for kaisle in G)

  or

  2*quicksum(uvar[jbatch,kaisle] for jbatch in Batch for kaisle in G)

  Best regards, 
  Jaromił

  0
• 

  Geoffrey James Kameni Tchokode

  • March 18, 2022 08:46

  

  

  

  thks!!!

  0

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