Easy pyflakes fixes in statefbk.py and statefbk_test.py

roryyorke · roryyorke · commit 465cfad03e42 · 2025-01-19T08:21:40.000+02:00
diff --git a/control/statefbk.py b/control/statefbk.py
@@ -47,12 +47,12 @@
 from . import statesp
 from .config import _process_legacy_keyword
 from .exception import ControlArgument, ControlDimension, \
-    ControlNotImplemented, ControlSlycot
+    ControlSlycot
 from .iosys import _process_indices, _process_labels, isctime, isdtime
 from .lti import LTI
 from .mateqn import _check_shape, care, dare
 from .nlsys import NonlinearIOSystem, interconnect
-from .statesp import StateSpace, _convert_to_statespace, _ssmatrix, ss
+from .statesp import StateSpace, _ssmatrix, ss
 
 # Make sure we have access to the right slycot routines
 try:
diff --git a/control/tests/statefbk_test.py b/control/tests/statefbk_test.py
@@ -7,10 +7,10 @@
 import pytest
 import itertools
 import warnings
-from math import pi, atan
+from math import pi
 
 import control as ct
-from control import lqe, dlqe, poles, rss, ss, tf
+from control import poles, rss, ss, tf
 from control.exception import ControlDimension, ControlSlycot, \
     ControlArgument, slycot_check
 from control.mateqn import care, dare
@@ -969,7 +969,6 @@ def unicycle_update(t, x, u, params):
         states=['x_', 'y_', 'theta_'],
         params={'a': 1})        # only used for testing params
 
-from math import pi
 
 @pytest.mark.parametrize("method", ['nearest', 'linear', 'cubic'])
 def test_gainsched_unicycle(unicycle, method):
