Does model.update() remove all assigned values ?

Answered

Gert Lek

May 25, 2022 07:32

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Hi,

For my project, im using callbacks to stop optimization, add some variables and constraints and then start optimizing again. After extending variables , if I call model.update() does this remove the previous assignment of values to the old variables? 

Thanks in advance,

Kind regards,

Gert Lek.

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  November 16, 2025 23:36

  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 try Gurobot, our chatbot interface offering instant, expert-level support.
• 

  Jaromił Najman

  • Gurobi Staff

  May 30, 2022 07:39

  Hi Gert,

  No, the update method does not remove any previous assignments. On your local machine, you usually don't have to call the update method explicitly, because it is called by the optimize method anyway.

  Best regards, 
  Jaromił

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