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No module named coin_backend

asked 2018-08-07 00:08:15 -0600

mohammadharizi gravatar image

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 2018-08-07 02:13:42 -0600

Sébastien gravatar image

updated 2018-08-07 02:32:30 -0600

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 gravatar imagemohammadharizi ( 2018-08-07 03:49:16 -0600 )edit

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Asked: 2018-08-07 00:08:15 -0600

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Last updated: Aug 07 '18