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"""Class for holding evolution result."""
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from __future__ import annotations
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from qiskit import QuantumCircuit
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from qiskit.algorithms.list_or_dict import ListOrDict
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from qiskit.opflow import StateFn, OperatorBase
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from qiskit.utils.deprecation import deprecate_func
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from ..algorithm_result import AlgorithmResult
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class EvolutionResult(AlgorithmResult):
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"""Deprecated: Class for holding evolution result.
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The EvolutionResult class has been superseded by the
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:class:`qiskit.algorithms.time_evolvers.TimeEvolutionResult` class.
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This class will be deprecated in a future release and subsequently
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removed after that.
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"""
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@deprecate_func(
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additional_msg=(
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"Instead, use the class ``qiskit.algorithms.time_evolvers.TimeEvolutionResult``. "
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"See https://qisk.it/algo_migration for a migration guide."
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),
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since="0.24.0",
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)
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def __init__(
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self,
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evolved_state: StateFn | QuantumCircuit | OperatorBase,
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aux_ops_evaluated: ListOrDict[tuple[complex, complex]] | None = None,
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):
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"""
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Args:
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evolved_state: An evolved quantum state.
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aux_ops_evaluated: Optional list of observables for which expected values on an evolved
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state are calculated. These values are in fact tuples formatted as (mean, standard
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deviation).
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"""
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self.evolved_state = evolved_state
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self.aux_ops_evaluated = aux_ops_evaluated
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