update exception thrown

Author: bencrabtree

src/sagemaker/jumpstart/accessors.py

@@ -320,7 +320,7 @@ def get_model_specs(
                     return model_specs
                 except Exception as ex:
                     # Failed with both, throw a custom error message
-                    raise Exception(
+                    raise RuntimeError(
                         f"Cannot get details for {model_id} in Hub {hub_arn}. \
                             {model_id} does not exist as a Model or ModelReference: \n"
                         + str(ex)

src/sagemaker/jumpstart/hub/hub.py

@@ -273,7 +273,7 @@ def describe_model(
         self, model_name: str, hub_name: Optional[str] = None, model_version: Optional[str] = None
     ) -> DescribeHubContentResponse:
         """Describe Model or ModelReference in a Hub."""
-        hub_name = self.hub_name if not hub_name else hub_name
+        hub_name = hub_name or self.hub_name
 
         # Users only input model id, not contentType, so first try to describe with ModelReference, then with Model
         try:
@@ -319,7 +319,7 @@ def describe_model(
 
             except Exception as ex:
                 # Failed with both, throw a custom error message
-                raise Exception(
+                raise RuntimeError(
                     f"Cannot get details for {model_name} in Hub {hub_name}. \
                         {model_name} does not exist as a Model or ModelReference in {hub_name}: \n"
                     + str(ex)