text: """
  Copyright 2020 The OneFlow Authors. All rights reserved.
  
  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.
  """
  from oneflow.nn.utils.container import *
  from oneflow.nn.module import Module
  
  
  class Sequential(get_seq(Module)):
      """A sequential container.
      Modules will be added to it in the order they are passed in the constructor.
      Alternatively, an ordered dict of modules can also be passed in.
  
      To make it easier to understand, here is a small example:
  
      .. code-block:: python
  
          >>> import oneflow.nn as nn
          >>> from collections import OrderedDict
          >>> nn.Sequential(nn.Conv2d(1,20,5), nn.ReLU(), nn.Conv2d(20,64,5), nn.ReLU()) #doctest: +ELLIPSIS
          Sequential(
            (0): Conv2d(1, 20, kernel_size=(5, 5), stride=(1, 1))
            (1): ReLU()
            (2): Conv2d(20, 64, kernel_size=(5, 5), stride=(1, 1))
            (3): ReLU()
          )
          >>> nn.Sequential(OrderedDict([
          ...    ('conv1', nn.Conv2d(1,20,5)),
          ...    ('relu1', nn.ReLU()),
          ...    ('conv2', nn.Conv2d(20,64,5)),
          ...    ('relu2', nn.ReLU())
          ... ])) #doctest: +ELLIPSIS
          Sequential(
            (conv1): Conv2d(1, 20, kernel_size=(5, 5), stride=(1, 1))
            (relu1): ReLU()
            (conv2): Conv2d(20, 64, kernel_size=(5, 5), stride=(1, 1))
            (relu2): ReLU()
          )
  
      """
  
      pass
  
  
  class ModuleList(get_list(Module)):
      pass
  
  
  class ModuleDict(get_dict(Module)):
      pass
  
  
  class ParameterList(get_para_list(Module)):
      pass
  
  
  class ParameterDict(get_para_dict(Module)):
      pass
  
  
  if __name__ == "__main__":
      import doctest
  
      doctest.testmod(raise_on_error=True)
  