feat: improve log for unknown status, set status to ok if solution could be parsed

Author: FabianHofmann

linopy/constants.py

@@ -239,4 +239,4 @@ def info(self) -> None:
             else:
                 logger.info(" Optimization successful: \n%s\n", self)
         else:
-            logger.warning("Optimization failed: \n%s\n", self)
+            logger.warning("Optimization potentially failed: \n%s\n", self)

linopy/solvers.py

@@ -217,9 +217,14 @@ def safe_get_solution(self, status: Status, func: Callable) -> Solution:
         if status.is_ok:
             return func()
         elif status.status == SolverStatus.unknown:
-            with contextlib.suppress(Exception):
+            try:
                 logger.warning("Solution status unknown. Trying to parse solution.")
-                return func()
+                sol = func()
+                status.status = SolverStatus.ok
+                logger.warning("Solution parsed successfully.")
+                return sol
+            except Exception as e:
+                logger.error(f"Failed to parse solution: {e}")
         return Solution()
 
     @abstractmethod
@@ -808,7 +813,7 @@ def _solve(
         -------
         Result
         """
-        CONDITION_MAP: dict[str, str] = {}
+        CONDITION_MAP: dict[str, str] = {"unknown": "ok"}
 
         if log_fn is not None:
             self.solver_options["log_file"] = path_to_string(log_fn)