old_contents: # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you 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.
  
  import os
  import argparse
  import logging
  logging.basicConfig(level=logging.DEBUG)
  from common import find_mxnet, data, fit
  from common.util import download_file
  import mxnet as mx
  
  if __name__ == '__main__':
      # parse args
      parser = argparse.ArgumentParser(description="train cifar10",
                                       formatter_class=argparse.ArgumentDefaultsHelpFormatter)
      fit.add_fit_args(parser)
      data.add_data_args(parser)
      data.add_data_aug_args(parser)
      # use a large aug level
      data.set_data_aug_level(parser, 3)
      parser.set_defaults(
          # network
          network          = 'resnet',
          num_layers       = 50,
          # data
          num_classes      = 1000,
          num_examples     = 1281167,
          image_shape      = '3,224,224',
          min_random_scale = 1, # if input image has min size k, suggest to use
                                # 256.0/x, e.g. 0.533 for 480
          # train
          num_epochs       = 80,
          lr_step_epochs   = '30,60',
          dtype            = 'float32'
      )
      args = parser.parse_args()
  
      # load network
      from importlib import import_module
      net = import_module('symbols.'+args.network)
      sym = net.get_symbol(**vars(args))
  
      # train
      fit.fit(args, sym, data.get_rec_iter)
  
new_contents: # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you 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.
  
  import os
  import argparse
  import logging
  logging.basicConfig(level=logging.DEBUG)
  from common import find_mxnet, data, fit
  from common.util import download_file
  import mxnet as mx
  
  if __name__ == '__main__':
      # parse args
      parser = argparse.ArgumentParser(description="train imagenet-1k",
                                       formatter_class=argparse.ArgumentDefaultsHelpFormatter)
      fit.add_fit_args(parser)
      data.add_data_args(parser)
      data.add_data_aug_args(parser)
      # use a large aug level
      data.set_data_aug_level(parser, 3)
      parser.set_defaults(
          # network
          network          = 'resnet',
          num_layers       = 50,
          # data
          num_classes      = 1000,
          num_examples     = 1281167,
          image_shape      = '3,224,224',
          min_random_scale = 1, # if input image has min size k, suggest to use
                                # 256.0/x, e.g. 0.533 for 480
          # train
          num_epochs       = 80,
          lr_step_epochs   = '30,60',
          dtype            = 'float32'
      )
      args = parser.parse_args()
  
      # load network
      from importlib import import_module
      net = import_module('symbols.'+args.network)
      sym = net.get_symbol(**vars(args))
  
      # train
      fit.fit(args, sym, data.get_rec_iter)
  
subject: Fix description of argument parser (#7507)