def test_sample_attribute_error(self):
"""Check that an error is raised if a required attribute
is not present in a sampled observable"""
self.logTestName()
dev = qml.device('default.qubit', wires=2)
queue = [qml.RX(0.543, wires=[0], do_queue=False)]
# Make a sampling observable but delete its num_samples attribute
obs = qml.sample(qml.PauliZ(0, do_queue=False), n=10)
del obs.num_samples
obs = [obs]
with self.assertRaisesRegex(
qml.DeviceError,
"Number of samples not specified for observable"):
dev.execute(queue, obs)
def circuit():
return qml.sample(qml.NumberOperator(0), 10)
raise NotImplementedError()
def circuit(x):
qml.RX(x, wires=[0])
return qml.sample(qml.PauliZ(0), 1), qml.sample(qml.PauliX(1), 1)
def circuit():
return qml.sample(qml.NumberOperator(0), 10)