old_contents: # coding=utf-8
  # Copyright 2022 The Fiddle-Config Authors.
  #
  # 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.
  
  r"""An example demonstrating Fiddle and absl_flags.
  
  Run this example with the following command:
  
  ```sh
  python3 -m fiddle.absl_flags.example.example \
    --fdl_config=simple \
    --fiddler=swap_weight_and_bias \
    --fdl.model.b=0.73
    --fdl.data.filename=\"other.txt\"
  ```
  """
  
  from typing import Sequence
  
  from absl import app
  import fiddle as fdl
  from fiddle import absl_flags
  from fiddle import printing
  from fiddle.absl_flags.example import configs
  
  
  def main(argv: Sequence[str]) -> None:
    if argv:
      raise ValueError('Unexpected CLI arguments.')
    cfg = absl_flags.create_buildable_from_flags(configs)
    print(printing.as_str_flattened(cfg))
    runner = fdl.build(cfg)
    runner.run()
  
  
  if __name__ == '__main__':
    app.run(main, flags_parser=absl_flags.flags_parser)
  
new_contents: # coding=utf-8
  # Copyright 2022 The Fiddle-Config Authors.
  #
  # 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.
  
  r"""An example demonstrating Fiddle and absl_flags.
  
  Run this example with the following command:
  
  ```sh
  python3 -m fiddle.absl_flags.example.example \
    --fdl_config=simple \
    --fiddler=swap_weight_and_bias \
    --fdl.model.b=0.73
    --fdl.data.filename='"other.txt"'  # Alt syntax: --fdl.data.filename=\"b.txt\"
  ```
  """
  
  from typing import Sequence
  
  from absl import app
  import fiddle as fdl
  from fiddle import absl_flags
  from fiddle import printing
  from fiddle.absl_flags.example import configs
  
  
  def main(argv: Sequence[str]) -> None:
    if argv:
      raise ValueError('Unexpected CLI arguments.')
    cfg = absl_flags.create_buildable_from_flags(configs)
    print(printing.as_str_flattened(cfg))
    runner = fdl.build(cfg)
    runner.run()
  
  
  if __name__ == '__main__':
    app.run(main, flags_parser=absl_flags.flags_parser)
  
subject: Improve the documentation for command line string parsing.