text: #!/usr/bin/python3
  # -*- coding: utf-8 -*-
  
  """
      Script to show not marked pieces of file
  
      :copyright: (c) 2016 Jauhien Piatlicki
      :license: Apache-2.0 or MIT, see LICENSE-* for details
  """
  
  import argparse
  import sys
  
  import snippets
  
  def main():
      parser = argparse.ArgumentParser("Show not marked pieces of FILE")
      parser.add_argument('file_in', help='input FILE')
      args = parser.parse_args()
      file_in = []
      with open(args.file_in) as f:
          file_in = f.readlines()
      file_snippets = snippets.parse_source(file_in)
      try:
          for line in file_snippets["not-marked"]:
              print(line)
      except KeyError:
          pass
  
  if __name__ == "__main__":
      sys.exit(main())
  