Deprecation in xpress Python interface

[finozzifa]

Deprecation for getObjVal

According to the FICO Xpress Python Interface available here, the method problem.getObjVal will be deprecated. The documentation suggests to perform the following substitution.

problem.getObjVal() 

with

problem.attributes.objval

We use the method in linopy here.

Deprecation for getProbStatusString

According to the FICO Xpress Python Interface available here, the method problem.getProbStatusString will be deprecated. The documentation suggests to perform the following substitution.

problem.getProbStatusString()

with

roblem.attributes.solvestatus and problem.attributes.solstatus

We use the method in linopy here.