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No module named coin_backend

asked 2018-08-06 15:03:40 +0200

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". Can someone tell me how I could to add the module?

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answered 2018-08-06 15:51:34 +0200

tmonteil gravatar image

This is probably because your file uses the COIN-OR solver to solve a MILP program. If you want to use COIN-OR MILP solver, you have to install the cbc optional package as follows:

sage -i cbc
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Asked: 2018-08-06 15:03:40 +0200

Seen: 118 times

Last updated: Aug 06 '18