Update control/passivity.py

Mark-Yeatman · bnavigator · web-flow · commit e6b837d4ff46 · 2022-12-16T15:44:58.000-05:00
Co-authored-by: Ben Greiner &lt;code@bnavigator.de&gt;
diff --git a/control/passivity.py b/control/passivity.py
@@ -175,12 +175,9 @@ def P_pos_def_constraint(n):
         return sol["x"]
 
     except ZeroDivisionError as e:
-        print(e)
-        print(
-            """The system is probably ill conditioned.
-            Consider perturbing the system matrices a small amount."""
-        )
-        raise(ZeroDivisionError)
+        raise ValueError("The system is probably ill conditioned. "
+                         "Consider perturbing the system matrices by a small amount."
+        ) from e
 
 
 
