| """Backward-compatibility shim -- the real implementation moved to | |
| dense_evolution.physics.observables as part of the Phase 2 subpackage split | |
| (see prog.txt). Kept so `from dense_evolution.observables import pauli_expectation, pauli_sum_expectation, pauli_hamiltonian_to_matrix` | |
| (used by external consumers, e.g. Dense-Evolution-Discovery) keeps working | |
| unchanged. Import from dense_evolution.physics.observables directly in new code. | |
| """ | |
| from dense_evolution.physics.observables import pauli_expectation, pauli_sum_expectation, pauli_hamiltonian_to_matrix | |
| __all__ = ['pauli_expectation', 'pauli_sum_expectation', 'pauli_hamiltonian_to_matrix'] | |