WeightedPauliOperator.evaluate_with_result

WeightedPauliOperator.evaluate_with_result(result, statevector_mode, use_simulator_snapshot_mode=False, circuit_name_prefix='')

This method can be only used with the circuits generated by the construct_evaluation_circuit() method with the same circuit_name_prefix name since the circuit names are tied to some meanings.

Calculate the evaluated value with the measurement results.

Parameters

• result (qiskit.Result) – the result from the backend.

• statevector_mode (bool) – indicate which type of simulator are used.

• use_simulator_snapshot_mode (bool) – if aer_provider is used, we can do faster evaluation for pauli mode on statevector simulation

• circuit_name_prefix (str) – a prefix of circuit name

Returns

the mean value float: the standard deviation

Return type

float

Raises

AquaError – if Operator is empty