fix improper exception in timeresp.py

murrayrm · murrayrm · commit 57ec9ff59135 · 2022-12-24T18:37:33.000-08:00
diff --git a/control/timeresp.py b/control/timeresp.py
@@ -642,7 +642,7 @@ def __len__(self):
     # Convert to pandas
     def to_pandas(self):
         if not pandas_check():
-            ImportError('pandas not installed')
+            raise ImportError("pandas not installed")
         import pandas
 
         # Create a dict for setting up the data frame
