fix up docstrings, unit test for append() methods after rebase

murrayrm · murrayrm · commit 1f8d2e683255 · 2025-02-02T21:16:34.000-08:00
diff --git a/control/statesp.py b/control/statesp.py
@@ -1273,7 +1273,7 @@ def append(self, other):
 
         Parameters
         ----------
-        other : `StateSpace`
+        other : `StateSpace` or `TransferFunction`
             System to be appended.
 
         Returns
diff --git a/control/tests/statesp_test.py b/control/tests/statesp_test.py
@@ -8,6 +8,7 @@
 """
 
 import operator
+import platform
 
 import numpy as np
 import pytest
diff --git a/control/xferfcn.py b/control/xferfcn.py
@@ -898,12 +898,12 @@ def feedback(self, other=1, sign=-1):
     def append(self, other):
         """Append a second model to the present model.
 
-        The second model is converted to FRD if necessary, inputs and
-        outputs are appended and their order is preserved.
+        The second model is converted to a transfer function if necessary,
+        inputs and outputs are appended and their order is preserved.
 
         Parameters
         ----------
-        other : `LTI`
+        other : `StateSpace` or `TransferFunction`
             System to be appended.
 
         Returns
