moved CaseInitError and CaseUseError into a separate module 'exce…

…ptions.py'

src/sim_explorer/case.py

@@ -13,6 +13,7 @@
 import numpy as np
 from libcosimpy.CosimLogging import CosimLogLevel, log_output_level
 
+from sim_explorer.exceptions import CaseInitError
 from sim_explorer.json5 import Json5
 from sim_explorer.simulator_interface import SimulatorInterface
 from sim_explorer.utils.misc import from_xml
@@ -32,18 +33,6 @@
 """
 
 
-class CaseInitError(Exception):
-    """Special error indicating that something is wrong during initialization of cases."""
-
-    pass
-
-
-class CaseUseError(Exception):
-    """Special error indicating that something is wrong during usage of cases."""
-
-    pass
-
-
 def _assert(condition: bool, msg: str, crit: int = 4, typ=CaseInitError):
     """Check condition and raise error is relevant with respect to condition and crit."""
     if crit == 1:

src/sim_explorer/exceptions.py

@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+"""This module contains custom exceptions for the sim-explorer package."""
+
+
+class CaseInitError(Exception):
+    """Special error indicating that something is wrong during initialization of cases."""
+
+    pass
+
+
+class CaseUseError(Exception):
+    """Special error indicating that something is wrong during usage of cases."""
+
+    pass