PulpSolver Error with lscp_###.solve function

[xf37]

I plan to use the lscp.ipynb as a part of lab material in my class. After IT staff successfully installed spopt on desktops in the lab, we got an "PulpSolver Error: cannot execute cbc.exe" every time we ran lscp_###.solve functions.

After trying multiple ways, I find one way to run successfully as follows:
1, conda uninstall pulp
2, pip install pulp
3, conda install spopt

But still, I am curious about any way to eliminate the errors at the very beginning.

[qszhao]

I plan to use the lscp.ipynb as a part of lab material in my class. After IT staff successfully installed spopt on desktops in the lab, we got an "PulpSolver Error: cannot execute cbc.exe" every time we ran lscp_###.solve functions.

After trying multiple ways, I find one way to run successfully as follows: 1, conda uninstall pulp 2, pip install pulp 3, conda install spopt

But still, I am curious about any way to eliminate the errors at the very beginning.

Hi Xin I think we had a previous issue #347.

Adding a line of code might solve the problem.
'solver = pl.PULP_CBC_CMD(keepFiles=True)

[jGaboardi]

Also: xref #348.

[xf37]

solver = pl.PULP_CBC_CMD(keepFiles=True)

Thanks very much!

[xf37]

Got it! Thanks!