No module named coin_backend

Please help me, When I run Present.sage file content as a new notebook on SageMath 8.1, an error message appears with the phrase "No module named coin_backend". Even though I installed the package cbc, it still remains a problem. So where is the problem? Can someone tell me how I could to add the module?

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answered 6 years ago

Sébastien
3341 ●8 ●44 ●92 http://www.slabbe.org/

updated 6 years ago

You need to run make after the installation of cbc or at least rebuild sagelib. The documentation on MILP solvers says to install cbc like this:

sage -i cbc sagelib

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It was resolved. Thanks to your guide.

mohammadharizi ( 6 years ago )

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Asked: 6 years ago

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Last updated: Aug 07 '18

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