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[Frontend] PyTree Observables as Parameters #338

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[Frontend] PyTree Observables as Parameters #338

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16 changes: 16 additions & 0 deletions frontend/test/pytest/bug.py
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import pennylane as qml
import pytest
from catalyst import qjit


def test_observable_as_parameter(backend):
"""Test to see if we can pass an observable parameter to qfunc."""

coeffs0 = [0.3, -5.1]
H0 = qml.Hamiltonian(qml.math.array(coeffs0), [qml.PauliZ(0), qml.PauliY(1)])

@qjit
def circuit(obs):
return qml.expval(obs)

circuit(H0)