text: # Copyright 2021 Huawei Technologies Co., Ltd
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  # http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  # ============================================================================
  """Quantum neural networks operators and cells."""
  
  from .pqc import generate_pqc_operator, PQC
  from .mindquantum_layer import MindQuantumLayer
  from .evolution import generate_evolution_operator, Evolution
  from .mindquantum_ansatz_only_layer import MindQuantumAnsatzOnlyLayer
  from .mindquantum_ansatz_only_layer import MindQuantumAnsatzOnlyOperator
  
  __all__ = [
      "generate_pqc_operator", "PQC", "MindQuantumLayer",
      "generate_evolution_operator", "Evolution", "MindQuantumAnsatzOnlyLayer",
      "MindQuantumAnsatzOnlyOperator"
  ]
  
  __all__.sort()
  