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gurobipy.GurobiError: Unknown attribute 'DualVio'

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  • 正式なコメント
    Simranjit Kaur
    • Gurobi Staff Gurobi Staff
    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?.
  • Eli Towle
    • Gurobi Staff Gurobi Staff

    Can you please share which version of Gurobi you're using and post a minimal working code example that reproduces the issue?

    0
  • Nazmi Sener
    • Gurobi-versary
    • Conversationalist
    • First Question

    I use Gurobi 9.1.2 with Conda environment (Python 3.8). 

    0
  • Eli Towle
    • Gurobi Staff Gurobi Staff

    Can you please post a minimal working code example that reproduces the issue?

    0
  • Nazmi Sener
    • Gurobi-versary
    • Conversationalist
    • First Question

    Dear Eli,

    Thank you for your quick responses.

    Since it is not easy to get the same error via a minimal example, I tried running a basic model from Gurobi online example library. The problem I tried to solve is Tic Tac Toe. You can find the link to the example via https://www.gurobi.com/resource/3d-tic-tac-toe-jupyter-notebook/.

    I am using Ubuntu 18.04. The example is coded and tested under conda environment.

    The error I get when I run this simple example is as follows:

    GurobiError Traceback (most recent call last) <ipython-input-8-152a7c8a416d> in <module> ----> 1 model.optimize() src/gurobipy/model.pxi in gurobipy.Model.optimize() GurobiError: Unknown attribute 'VBasis'

    0
  • Maliheh Aramon
    • Gurobi Staff Gurobi Staff

    Hi Nazmi,

    Gurobi 9.5 was recently released. Included in this release is a fix for the bug you observed regarding unknown attribute/parameter. There is no need to change the locale anymore.

    We hope this fix works well for you. Thank you for reporting this bug and please let us know if you see any other issues in the future.

    Best regards,

    Maliheh

    0

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