diff --git a/control/tests/input_element_int_test.py b/control/tests/input_element_int_test.py
index 94e5efcb5..5b3b801c6 100644
--- a/control/tests/input_element_int_test.py
+++ b/control/tests/input_element_int_test.py
@@ -63,4 +63,4 @@ def test_ss_input_with_0int_dcgain(self):
d = 0
sys = ss(a, b, c, d)
np.testing.assert_allclose(dcgain(sys), 0,
- atol=np.finfo(np.float).epsneg)
+ atol=np.finfo(float).epsneg)
diff --git a/control/tests/timeresp_test.py b/control/tests/timeresp_test.py
index f6c15f691..751cd35b0 100644
--- a/control/tests/timeresp_test.py
+++ b/control/tests/timeresp_test.py
@@ -408,7 +408,7 @@ def test_forced_response_step(self, tsystem):
"""Test forced response of SISO systems as step response"""
sys = tsystem.sys
t = tsystem.t
- u = np.ones_like(t, dtype=np.float)
+ u = np.ones_like(t, dtype=float)
yref = tsystem.ystep
tout, yout = forced_response(sys, t, u)
@@ -416,7 +416,7 @@ def test_forced_response_step(self, tsystem):
np.testing.assert_array_almost_equal(yout, yref, decimal=4)
@pytest.mark.parametrize("u",
- [np.zeros((10,), dtype=np.float),
+ [np.zeros((10,), dtype=float),
0] # special algorithm
)
def test_forced_response_initial(self, siso_ss1, u):
diff --git a/control/tests/xferfcn_input_test.py b/control/tests/xferfcn_input_test.py
index 995f6ac03..00024ba4c 100644
--- a/control/tests/xferfcn_input_test.py
+++ b/control/tests/xferfcn_input_test.py
@@ -54,15 +54,15 @@
@pytest.mark.parametrize("dtype",
- [np.int, np.int8, np.int16, np.int32, np.int64,
- np.float, np.float16, np.float32, np.float64,
+ [int, np.int8, np.int16, np.int32, np.int64,
+ float, np.float16, np.float32, np.float64,
np.longdouble])
@pytest.mark.parametrize("num, fun", cases.values(), ids=cases.keys())
def test_clean_part(num, fun, dtype):
"""Test clean part for various inputs"""
numa = fun(dtype, num)
num_ = _clean_part(numa)
- ref_ = np.array(num, dtype=np.float, ndmin=3)
+ ref_ = np.array(num, dtype=float, ndmin=3)
assert isinstance(num_, list)
assert np.all([isinstance(part, list) for part in num_])
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