read/write

Author: rschwarz

highs_test.py

@@ -22,6 +22,7 @@
 print()
 print(f"objective bound: {model.objective_bound}, {solver.get_objective_bound()}")
 print(f"obj expr: {model.objective}, {solver.get_objective()}")
+model.write("test.lp")
 
 # internals
 print()

mip/highs.py

@@ -455,10 +455,10 @@ def set_num_threads(self: "SolverHighs", threads: int):
         self._set_int_option_value("threads", threads)
 
     def write(self: "SolverHighs", file_path: str):
-        pass
+        status = self._lib.Highs_writeModel(self._model, file_path.encode("utf-8"))
 
     def read(self: "SolverHighs", file_path: str):
-        pass
+        status = self._lib.Highs_readModel(self._model, file_path.encode("utf-8"))
 
     def num_cols(self: "SolverHighs") -> int:
         return self._lib.Highs_getNumCol(self._model)