How can I print a model to the screen?

[erelsgl]

I created a model in code, and the solution is wrong. To debug the issue, I would like to print the model to the screen. When I write print(model). I get MIP model: <mip.model.Model object at 0x00000192D35C6950>.

Is there a way to print the actual model (the constraints and objective) to the screen?

[rschwarz]

You can use Model.write("problem.lp") to write the problem to a file in the .lp format, which is human-readable.

[erelsgl]

OK. This helps, but I think it would be better to be able to get the model as a string. This would allow e.g. to write the model to a log file using the standard logging, print it to the console, etc.

[sebheger]

@erelsgl The best way at the moment to do that is already stated by @rschwarz
There might be a useful extension to write the model into a filestream to work with it. There was already a lot of discussion, but we most likely will not support something like print(model) to print all associated model entities.

[rschwarz]

Note that you can iterate over the model.constrs and call str(c) on each, to get a representation that way.